#51BFEA#51BFEA

#51BFEA is a light, moderate cyan. Relative luminance 0.450; OKLCH L 75.8% C 0.117 H 227.3°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#51BFEA
RGB	rgb(81, 191, 234)
HSL	hsl(197, 78%, 62%)
HSV	hsv(197, 65%, 92%)
CMYK	cmyk(65.4%, 18.4%, 0%, 8.2%)
CIE-LAB	lab(72.86, -18.35, -30.63)
CIE-LCH	lch(72.86, 35.71, 239.07°)
OKLab	oklab(75.84% -0.0791 -0.0856)
OKLCH	oklch(75.84% 0.117 227.3)
XYZ	xyz(36.8695, 44.9475, 84.5586)
Luminance	0.4495 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFEA #EA7C51

analogous

#51EAC9 #51BFEA #5173EA

triadic

#51BFEA #EA51BF #BFEA51

tetradic

#51BFEA #C951EA #EA7C51 #73EA51

square

#51BFEA #C951EA #EA7C51 #73EA51

split-complementary

#51BFEA #EA5173 #EAC951

monochromatic

#1581AC #1BABE2 #51BFEA #88D3F1 #BEE7F7

Accessibility & contrast

On white

2.10

#51BFEA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#51BFEA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFEA

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFEA	#FFFFFF	#000000	##000000
##51BFEA	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8BCEC

Deuteranopia (green-blind)

#93ACE9

Tritanopia (blue-blind)

#00CBCD

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51bfea;
/* rgb */ color: rgb(81, 191, 234);
/* oklch */ color: oklch(75.8% 0.117 227.3);

Tailwind

colors: {
  custom: {
    50: '#92d2f0',
    500: '#51bfea',
    950: '#000000',
  },
}

SCSS

$custom: #51bfea;
$custom-light: #92d2f0;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfea",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 234
  },
  "hsl": {
    "h": 196.863,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.75837,
    "c": 0.11662,
    "h": 227.3
  },
  "luminance": 0.44951
}

Semantic roles & 50–950 ramp

primary

#51BFEA

secondary

#E8BFAF

accent

#450BDB

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BFEA

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

Preview Lab → · Contrast checker → · Palette generator →