What color is #51AFBD?

#51AFBD is a medium cyan. In RGB it is rgb(81, 175, 189), and in HSL hsl(188, 45%, 53%).

Is #51AFBD accessible as text?

On white, #51AFBD has a contrast ratio of 2.56:1 (fails WCAG AA for body text); on black it is 8.22:1 (passes). For text placed on #51AFBD, use black for the best readability.

What is the closest Tailwind color to #51AFBD?

The nearest Tailwind CSS token is cyan-500 (#00B8DB).

What colors go well with #51AFBD?

#51AFBD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BD6051. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #51AFBD below.

Is #51AFBD good for buttons?

#51AFBD works well for buttons and highlights, but use black text on #51AFBD — white text only reaches 2.56:1, below the 4.5:1 needed for normal-size labels.

Is #51AFBD the same as CSS lightseagreen?

No — #51AFBD is not the CSS named color lightseagreen, but lightseagreen (#20B2AA) 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.

#51AFBD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #51AFBD

Not just a swatch — here's how #51AFBD works with other colors. Named schemes with #51AFBD in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #51AFBD Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Verdigris keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Coastal Morning Lead · 5 colors

Lead #51AFBD Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

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

Japanese Sand Base · 5 colors

Base #51AFBD Surface #ECEADC Highlight #F4F2E7 Secondary #B4B19F Ink #2A2723

Verdigris sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Tech Product Signal · 5 colors

Signal #51AFBD Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #83D4E1

Verdigris is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Verdigris.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #51AFBD Secondary #B5D2D6 Support #979286 Ink #16140F

Verdigris 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 Verdigris carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #51AFBD 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 25/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 59/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 29/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 6/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 37/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 35/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 44/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #51AFBD

For UI

For branding

For interior

For fashion

People also use #51AFBD with

Medium Aquamarine Very Peri Indian Red Platinum Dark Slate Gray

UI roles & guardrails

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

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 7.3:1. Use

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

Avoid beside #518BBD — 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 #51AFBD 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: #51AFBD;
  --color-base-rgb: 81 175 189;
  --color-base-oklch: oklch(70.3% 0.091 208.4);
  --color-50: #F4FAFB;
  --color-100: #E1F2F4;
  --color-200: #C4E4E8;
  --color-300: #9BCDD5;
  --color-400: #74B4BE;
  --color-500: #5397A2;
  --color-600: #45757D;
  --color-700: #35555A;
  --color-800: #26383B;
  --color-900: #192325;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  verdigris: {
    50: '#F4FAFB',
    100: '#E1F2F4',
    200: '#C4E4E8',
    300: '#9BCDD5',
    400: '#74B4BE',
    500: '#5397A2',
    600: '#45757D',
    700: '#35555A',
    800: '#26383B',
    900: '#192325',
  },
}

$base: #51AFBD;
$base-ink: #141310;
$base-50: #F4FAFB;
$base-100: #E1F2F4;
$base-200: #C4E4E8;
$base-300: #9BCDD5;
$base-400: #74B4BE;
$base-500: #5397A2;
$base-600: #45757D;
$base-700: #35555A;
$base-800: #26383B;
$base-900: #192325;
$base-hover: #3B909D;
$base-subtle: #CFE4E7;

{
    "color": {
        "base": {
            "value": "#51AFBD",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAFB",
                "type": "color"
            },
            "100": {
                "value": "#E1F2F4",
                "type": "color"
            },
            "200": {
                "value": "#C4E4E8",
                "type": "color"
            },
            "300": {
                "value": "#9BCDD5",
                "type": "color"
            },
            "400": {
                "value": "#74B4BE",
                "type": "color"
            },
            "500": {
                "value": "#5397A2",
                "type": "color"
            },
            "600": {
                "value": "#45757D",
                "type": "color"
            },
            "700": {
                "value": "#35555A",
                "type": "color"
            },
            "800": {
                "value": "#26383B",
                "type": "color"
            },
            "900": {
                "value": "#192325",
                "type": "color"
            }
        }
    }
}

Palettes built on #51AFBD

Color Lab

Pairs with #51AFBD

UI roles & guardrails

In real applications

Scales

Every model

Export