#51A4BF#51A4BF

#51A4BF is a light, moderate cyan. Relative luminance 0.321; OKLCH L 67.7% C 0.090 H 221.9°. Best body text is #000000 at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#51A4BF
RGB	rgb(81, 164, 191)
HSL	hsl(195, 46%, 53%)
HSV	hsv(195, 58%, 75%)
CMYK	cmyk(57.6%, 14.1%, 0%, 25.1%)
CIE-LAB	lab(63.39, -17.34, -21.52)
CIE-LCH	lch(63.39, 27.64, 231.13°)
OKLab	oklab(67.74% -0.0667 -0.0598)
OKLCH	oklch(67.74% 0.09 221.9)
XYZ	xyz(26.0691, 32.0594, 54.0944)
Luminance	0.3206 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4BF #BF6C51

analogous

#51BFA3 #51A4BF #516DBF

triadic

#51A4BF #BF51A4 #A4BF51

tetradic

#51A4BF #A351BF #BF6C51 #6DBF51

square

#51A4BF #A351BF #BF6C51 #6DBF51

split-complementary

#51A4BF #BF516D #BFA351

monochromatic

#285C6D #39829A #51A4BF #7EBBCF #AAD3E0

Accessibility & contrast

On white

2.83

#51A4BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.41

#51A4BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4BF

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4BF	#FFFFFF	#000000	##000000
##51A4BF	1.00	2.83	7.41	7.41
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.41	21.00	1.00	1.00
##000000	7.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A0C0

Deuteranopia (green-blind)

#8494BF

Tritanopia (blue-blind)

#00ADAD

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #51a4bf;
/* rgb */ color: rgb(81, 164, 191);
/* oklch */ color: oklch(67.7% 0.090 221.9);

Tailwind

colors: {
  custom: {
    50: '#8bbfd2',
    500: '#51a4bf',
    950: '#000000',
  },
}

SCSS

$custom: #51a4bf;
$custom-light: #8bbfd2;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4bf",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 191
  },
  "hsl": {
    "h": 194.727,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.67744,
    "c": 0.08957,
    "h": 221.9
  },
  "luminance": 0.32062
}

Semantic roles & 50–950 ramp

primary

#51A4BF

secondary

#CEAA9E

accent

#7252D6

background

#F9FBFC

surface

#F1F7F9

border

#CBD0D2

text

#0D1214

muted

#7E8182

Preview Lab

Preview with #51A4BF

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

Preview Lab → · Contrast checker → · Palette generator →