#51B3CE#51B3CE

#51B3CE is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.9% C 0.099 H 218.7°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#51B3CE
RGB	rgb(81, 179, 206)
HSL	hsl(193, 56%, 56%)
HSV	hsv(193, 61%, 81%)
CMYK	cmyk(60.7%, 13.1%, 0%, 19.2%)
CIE-LAB	lab(68.35, -20.69, -22.27)
CIE-LCH	lch(68.35, 30.40, 227.11°)
OKLab	oklab(71.89% -0.0772 -0.0619)
OKLCH	oklch(71.89% 0.099 218.7)
XYZ	xyz(30.6495, 38.4427, 64.1855)
Luminance	0.3845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B3CE #CE6C51

analogous

#51CEAB #51B3CE #5175CE

triadic

#51B3CE #CE51B3 #B3CE51

tetradic

#51B3CE #AB51CE #CE6C51 #75CE51

square

#51B3CE #AB51CE #CE6C51 #75CE51

split-complementary

#51B3CE #CE5175 #CEAB51

monochromatic

#246D80 #3295B0 #51B3CE #81C8DB #B1DDE9

Accessibility & contrast

On white

2.42

#51B3CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#51B3CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B3CE

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B3CE	#FFFFFF	#000000	##000000
##51B3CE	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2AECF

Deuteranopia (green-blind)

#90A1CE

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #51b3ce;
/* rgb */ color: rgb(81, 179, 206);
/* oklch */ color: oklch(71.9% 0.099 218.7);

Tailwind

colors: {
  custom: {
    50: '#8ecadd',
    500: '#51b3ce',
    950: '#000000',
  },
}

SCSS

$custom: #51b3ce;
$custom-light: #8ecadd;
$custom-dark: #000000;

JSON

{
  "hex": "#51b3ce",
  "rgb": {
    "r": 81,
    "g": 179,
    "b": 206
  },
  "hsl": {
    "h": 192.96,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.71887,
    "c": 0.09893,
    "h": 218.7
  },
  "luminance": 0.38446
}

Semantic roles & 50–950 ramp

primary

#51B3CE

secondary

#D7AFA4

accent

#6948DF

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B3CE

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

Preview Lab → · Contrast checker → · Palette generator →