#51A3BF#51A3BF

#51A3BF is a light, moderate cyan. Relative luminance 0.317; OKLCH L 67.5% C 0.090 H 223.0°. Best body text is #000000 at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#51A3BF
RGB	rgb(81, 163, 191)
HSL	hsl(195, 46%, 53%)
HSV	hsv(195, 58%, 75%)
CMYK	cmyk(57.6%, 14.7%, 0%, 25.1%)
CIE-LAB	lab(63.10, -16.81, -21.97)
CIE-LCH	lch(63.10, 27.67, 232.57°)
OKLab	oklab(67.51% -0.0656 -0.0611)
OKLCH	oklch(67.51% 0.09 223)
XYZ	xyz(25.8908, 31.7029, 54.0349)
Luminance	0.3170 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A3BF #BF6D51

analogous

#51BFA4 #51A3BF #516CBF

triadic

#51A3BF #BF51A3 #A3BF51

tetradic

#51A3BF #A451BF #BF6D51 #6CBF51

square

#51A3BF #A451BF #BF6D51 #6CBF51

split-complementary

#51A3BF #BF516C #BFA451

monochromatic

#285C6D #39819A #51A3BF #7EBBCF #AAD2E0

Accessibility & contrast

On white

2.86

#51A3BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.34

#51A3BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3BF

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A3BF	#FFFFFF	#000000	##000000
##51A3BF	1.00	2.86	7.34	7.34
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.34	21.00	1.00	1.00
##000000	7.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939FC0

Deuteranopia (green-blind)

#8394BF

Tritanopia (blue-blind)

#00ACAC

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #51a3bf;
/* rgb */ color: rgb(81, 163, 191);
/* oklch */ color: oklch(67.5% 0.090 223.0);

Tailwind

colors: {
  custom: {
    50: '#8bbed2',
    500: '#51a3bf',
    950: '#000000',
  },
}

SCSS

$custom: #51a3bf;
$custom-light: #8bbed2;
$custom-dark: #000000;

JSON

{
  "hex": "#51a3bf",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 191
  },
  "hsl": {
    "h": 195.273,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.67508,
    "c": 0.08961,
    "h": 223
  },
  "luminance": 0.31705
}

Semantic roles & 50–950 ramp

primary

#51A3BF

secondary

#CEAA9E

accent

#7452D6

background

#F9FBFC

surface

#F1F6F9

border

#CBD0D2

text

#0D1214

muted

#7E8182

Preview Lab

Preview with #51A3BF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →