What color is #999B01?

#999B01 is a dark, vivid yellow. In RGB it is rgb(153, 155, 1), and in HSL hsl(61, 99%, 31%).

Is #999B01 accessible as text?

On white, #999B01 has a contrast ratio of 2.98:1 (fails WCAG AA for body text); on black it is 7.04:1 (passes). For text placed on #999B01, use black for the best readability.

What is the closest Tailwind color to #999B01?

The nearest Tailwind CSS token is lime-600 (#5EA500).

What colors go well with #999B01?

#999B01 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #03019D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #999B01 below.

Is #999B01 good for buttons?

#999B01 works well for buttons and highlights, but use black text on #999B01 — white text only reaches 2.98:1, below the 4.5:1 needed for normal-size labels.

Is #999B01 the same as CSS darkgoldenrod?

No — #999B01 is not the CSS named color darkgoldenrod, but darkgoldenrod (#B8860B) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#999B01 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #999B01

Not just a swatch — here's how #999B01 works with other colors. Named schemes with #999B01 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #999B01 Secondary #B16908 Accent #6D7B49 Surface #F2ECDD Anchor #3A2B1F

This palette keeps Citron as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Botanical Studio Lead · 5 colors

Lead #999B01 Secondary #526A37 Accent #B16908 Surface #EFE9D6 Anchor #3D2F21

Citron leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Desert Clay Center · 5 colors

Center #999B01 Surface #DFD0A8 Secondary #AD7C50 Accent #8F9A71 Anchor #3D2D1F

Citron holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.

Coastal Morning Lead · 5 colors

Lead #999B01 Accent #A9C4B8 Surface #E3D8BE Secondary #9AA09F Anchor #173647

Citron opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #999B01 Secondary #C1C39D Support #999186 Ink #17140F

Citron is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Citron carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #999B01 actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 71/100

Warm

Reads warm and advancing — inviting, energetic, draws the eye forward.

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

Low

Mid depth — usable as an accent or a muted ground.

Naturalness 72/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 56/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 73/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 24/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #999B01

For UI

For branding

For interior

For fashion

People also use #999B01 with

Tawny Olive Drab Phthalo Blue Platinum Army Green

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.2:1. Use

Subtle surface Use #F4F5C3 for cards and hover fills. Tint 80

Avoid beside #679D01 — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #999B01 at work across the surfaces designers actually ship.

Website / UI

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Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #999B01;
  --color-base-rgb: 153 155 1;
  --color-base-oklch: oklch(66.6% 0.146 110.7);
  --color-50: #FEFEF0;
  --color-100: #FDFDD8;
  --color-200: #FAFCB1;
  --color-300: #F5F778;
  --color-400: #E8EB47;
  --color-500: #CFD223;
  --color-600: #9C9F23;
  --color-700: #6E6F1F;
  --color-800: #474819;
  --color-900: #2C2C11;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  citron: {
    50: '#FEFEF0',
    100: '#FDFDD8',
    200: '#FAFCB1',
    300: '#F5F778',
    400: '#E8EB47',
    500: '#CFD223',
    600: '#9C9F23',
    700: '#6E6F1F',
    800: '#474819',
    900: '#2C2C11',
  },
}

$base: #999B01;
$base-ink: #141310;
$base-50: #FEFEF0;
$base-100: #FDFDD8;
$base-200: #FAFCB1;
$base-300: #F5F778;
$base-400: #E8EB47;
$base-500: #CFD223;
$base-600: #9C9F23;
$base-700: #6E6F1F;
$base-800: #474819;
$base-900: #2C2C11;
$base-hover: #7C7E01;
$base-subtle: #F1F2A2;

{
    "color": {
        "base": {
            "value": "#999B01",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEFEF0",
                "type": "color"
            },
            "100": {
                "value": "#FDFDD8",
                "type": "color"
            },
            "200": {
                "value": "#FAFCB1",
                "type": "color"
            },
            "300": {
                "value": "#F5F778",
                "type": "color"
            },
            "400": {
                "value": "#E8EB47",
                "type": "color"
            },
            "500": {
                "value": "#CFD223",
                "type": "color"
            },
            "600": {
                "value": "#9C9F23",
                "type": "color"
            },
            "700": {
                "value": "#6E6F1F",
                "type": "color"
            },
            "800": {
                "value": "#474819",
                "type": "color"
            },
            "900": {
                "value": "#2C2C11",
                "type": "color"
            }
        }
    }
}

Palettes built on #999B01

Color Lab

Pairs with #999B01

UI roles & guardrails

In real applications

Scales

Every model

Export