#51B2CB#51B2CB

#51B2CB is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.5% C 0.097 H 217.3°. Best body text is #000000 at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#51B2CB
RGB	rgb(81, 178, 203)
HSL	hsl(192, 54%, 56%)
HSV	hsv(192, 60%, 80%)
CMYK	cmyk(60.1%, 12.3%, 0%, 20.4%)
CIE-LAB	lab(67.95, -21.07, -21.23)
CIE-LCH	lch(67.95, 29.91, 225.22°)
OKLab	oklab(71.53% -0.0773 -0.059)
OKLCH	oklch(71.53% 0.097 217.3)
XYZ	xyz(30.0889, 37.8989, 62.2179)
Luminance	0.3790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B2CB #CB6A51

analogous

#51CBA7 #51B2CB #5175CB

triadic

#51B2CB #CB51B2 #B2CB51

tetradic

#51B2CB #A751CB #CB6A51 #75CB51

square

#51B2CB #A751CB #CB6A51 #75CB51

split-complementary

#51B2CB #CB5175 #CBA751

monochromatic

#256B7C #3393AC #51B2CB #80C7D9 #AFDCE7

Accessibility & contrast

On white

2.45

#51B2CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.58

#51B2CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B2CB

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B2CB	#FFFFFF	#000000	##000000
##51B2CB	1.00	2.45	8.58	8.58
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.58	21.00	1.00	1.00
##000000	8.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1ADCC

Deuteranopia (green-blind)

#90A0CB

Tritanopia (blue-blind)

#00BBBA

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b2cb;
/* rgb */ color: rgb(81, 178, 203);
/* oklch */ color: oklch(71.5% 0.097 217.3);

Tailwind

colors: {
  custom: {
    50: '#8dc9da',
    500: '#51b2cb',
    950: '#000000',
  },
}

SCSS

$custom: #51b2cb;
$custom-light: #8dc9da;
$custom-dark: #000000;

JSON

{
  "hex": "#51b2cb",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 203
  },
  "hsl": {
    "h": 192.295,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.71532,
    "c": 0.0972,
    "h": 217.3
  },
  "luminance": 0.37902
}

Semantic roles & 50–950 ramp

primary

#51B2CB

secondary

#D5ADA3

accent

#694ADD

background

#F9FCFD

surface

#F1F8FA

border

#CBD1D3

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B2CB

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

Preview Lab → · Contrast checker → · Palette generator →