#51BEEB#51BEEB

#51BEEB is a light, moderate cyan. Relative luminance 0.446; OKLCH L 75.6% C 0.118 H 228.6°. Best body text is #000000 at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#51BEEB
RGB	rgb(81, 190, 235)
HSL	hsl(198, 79%, 62%)
HSV	hsv(198, 66%, 92%)
CMYK	cmyk(65.5%, 19.1%, 0%, 7.8%)
CIE-LAB	lab(72.61, -17.52, -31.56)
CIE-LCH	lch(72.61, 36.10, 240.96°)
OKLab	oklab(75.65% -0.0778 -0.0883)
OKLCH	oklch(75.65% 0.118 228.6)
XYZ	xyz(36.7962, 44.5705, 85.2449)
Luminance	0.4457 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEEB #EB7E51

analogous

#51EBCB #51BEEB #5171EB

triadic

#51BEEB #EB51BE #BEEB51

tetradic

#51BEEB #CB51EB #EB7E51 #71EB51

square

#51BEEB #CB51EB #EB7E51 #71EB51

split-complementary

#51BEEB #EB5171 #EBCB51

monochromatic

#1481AE #1AA9E5 #51BEEB #88D3F1 #BFE7F8

Accessibility & contrast

On white

2.12

#51BEEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.91

#51BEEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEEB

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEEB	#FFFFFF	#000000	##000000
##51BEEB	1.00	2.12	9.91	9.91
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.91	21.00	1.00	1.00
##000000	9.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BBED

Deuteranopia (green-blind)

#91ABEA

Tritanopia (blue-blind)

#00CBCD

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51beeb;
/* rgb */ color: rgb(81, 190, 235);
/* oklch */ color: oklch(75.6% 0.118 228.6);

Tailwind

colors: {
  custom: {
    50: '#92d1f1',
    500: '#51beeb',
    950: '#000000',
  },
}

SCSS

$custom: #51beeb;
$custom-light: #92d1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51beeb",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 235
  },
  "hsl": {
    "h": 197.532,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.7565,
    "c": 0.11767,
    "h": 228.6
  },
  "luminance": 0.44574
}

Semantic roles & 50–950 ramp

primary

#51BEEB

secondary

#E8C0B0

accent

#470ADC

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BEEB

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

Preview Lab → · Contrast checker → · Palette generator →