#51C2E8#51C2E8

#51C2E8 is a light, moderate cyan. Relative luminance 0.462; OKLCH L 76.4% C 0.115 H 223.7°. Best body text is #000000 at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#51C2E8
RGB	rgb(81, 194, 232)
HSL	hsl(195, 77%, 61%)
HSV	hsv(195, 65%, 91%)
CMYK	cmyk(65.1%, 16.4%, 0%, 9%)
CIE-LAB	lab(73.65, -20.52, -28.34)
CIE-LCH	lch(73.65, 34.99, 234.09°)
OKLab	oklab(76.44% -0.0829 -0.0791)
OKLCH	oklch(76.44% 0.115 223.7)
XYZ	xyz(37.2447, 46.1551, 83.2743)
Luminance	0.4616 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2E8 #E87751

analogous

#51E8C2 #51C2E8 #5177E8

triadic

#51C2E8 #E851C2 #C2E851

tetradic

#51C2E8 #C251E8 #E87751 #77E851

square

#51C2E8 #C251E8 #E87751 #77E851

split-complementary

#51C2E8 #E85177 #E8C251

monochromatic

#1684A8 #1DAEDE #51C2E8 #87D5EF #BDE8F6

Accessibility & contrast

On white

2.05

#51C2E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.23

#51C2E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2E8

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2E8	#FFFFFF	#000000	##000000
##51C2E8	1.00	2.05	10.23	10.23
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.23	21.00	1.00	1.00
##000000	10.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBEEA

Deuteranopia (green-blind)

#97AEE8

Tritanopia (blue-blind)

#00CECE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #51c2e8;
/* rgb */ color: rgb(81, 194, 232);
/* oklch */ color: oklch(76.4% 0.115 223.7);

Tailwind

colors: {
  custom: {
    50: '#91d4ef',
    500: '#51c2e8',
    950: '#000000',
  },
}

SCSS

$custom: #51c2e8;
$custom-light: #91d4ef;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2e8",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 232
  },
  "hsl": {
    "h": 195.099,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.76443,
    "c": 0.11456,
    "h": 223.7
  },
  "luminance": 0.46159
}

Semantic roles & 50–950 ramp

primary

#51C2E8

secondary

#E7BCAE

accent

#400DD9

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C2E8

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

Preview Lab → · Contrast checker → · Palette generator →