#51B0DE#51B0DE

#51B0DE is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.9% C 0.111 H 232.3°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#51B0DE
RGB	rgb(81, 176, 222)
HSL	hsl(200, 68%, 59%)
HSV	hsv(200, 64%, 87%)
CMYK	cmyk(63.5%, 20.7%, 0%, 12.9%)
CIE-LAB	lab(68.07, -14.19, -31.48)
CIE-LCH	lch(68.07, 34.53, 245.74°)
OKLab	oklab(71.87% -0.0681 -0.0881)
OKLCH	oklch(71.87% 0.111 232.3)
XYZ	xyz(32.0984, 38.0706, 74.7498)
Luminance	0.3807 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B0DE #DE7F51

analogous

#51DEC5 #51B0DE #516ADE

triadic

#51B0DE #DE51B0 #B0DE51

tetradic

#51B0DE #C551DE #DE7F51 #6ADE51

square

#51B0DE #C551DE #DE7F51 #6ADE51

split-complementary

#51B0DE #DE516A #DEC551

monochromatic

#1D7098 #2796CB #51B0DE #84C7E8 #B8DFF2

Accessibility & contrast

On white

2.44

#51B0DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.61

#51B0DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B0DE

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B0DE	#FFFFFF	#000000	##000000
##51B0DE	1.00	2.44	8.61	8.61
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.61	21.00	1.00	1.00
##000000	8.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99AEE0

Deuteranopia (green-blind)

#86A0DD

Tritanopia (blue-blind)

#00BCBF

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b0de;
/* rgb */ color: rgb(81, 176, 222);
/* oklch */ color: oklch(71.9% 0.111 232.3);

Tailwind

colors: {
  custom: {
    50: '#8fc7e8',
    500: '#51b0de',
    950: '#000000',
  },
}

SCSS

$custom: #51b0de;
$custom-light: #8fc7e8;
$custom-dark: #000000;

JSON

{
  "hex": "#51b0de",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 222
  },
  "hsl": {
    "h": 199.574,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.71868,
    "c": 0.1114,
    "h": 232.3
  },
  "luminance": 0.38074
}

Semantic roles & 50–950 ramp

primary

#51B0DE

secondary

#E1BCAA

accent

#763DEB

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51B0DE

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

Preview Lab → · Contrast checker → · Palette generator →