#51BEEA#51BEEA

#51BEEA is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.6% C 0.117 H 228.0°. Best body text is #000000 at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#51BEEA
RGB	rgb(81, 190, 234)
HSL	hsl(197, 78%, 62%)
HSV	hsv(197, 65%, 92%)
CMYK	cmyk(65.4%, 18.8%, 0%, 8.2%)
CIE-LAB	lab(72.57, -17.83, -31.08)
CIE-LCH	lch(72.57, 35.83, 240.15°)
OKLab	oklab(75.61% -0.0781 -0.0869)
OKLCH	oklch(75.61% 0.117 228)
XYZ	xyz(36.6522, 44.5128, 84.4862)
Luminance	0.4452 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEEA #EA7D51

analogous

#51EACA #51BEEA #5172EA

triadic

#51BEEA #EA51BE #BEEA51

tetradic

#51BEEA #CA51EA #EA7D51 #72EA51

square

#51BEEA #CA51EA #EA7D51 #72EA51

split-complementary

#51BEEA #EA5172 #EACA51

monochromatic

#1580AC #1BA9E2 #51BEEA #88D2F1 #BEE7F7

Accessibility & contrast

On white

2.12

#51BEEA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.90

#51BEEA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEEA

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEEA	#FFFFFF	#000000	##000000
##51BEEA	1.00	2.12	9.90	9.90
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.90	21.00	1.00	1.00
##000000	9.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BBEC

Deuteranopia (green-blind)

#92ABE9

Tritanopia (blue-blind)

#00CBCC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51beea;
/* rgb */ color: rgb(81, 190, 234);
/* oklch */ color: oklch(75.6% 0.117 228.0);

Tailwind

colors: {
  custom: {
    50: '#91d1f1',
    500: '#51beea',
    950: '#000000',
  },
}

SCSS

$custom: #51beea;
$custom-light: #91d1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51beea",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 234
  },
  "hsl": {
    "h": 197.255,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.75607,
    "c": 0.11688,
    "h": 228
  },
  "luminance": 0.44517
}

Semantic roles & 50–950 ramp

primary

#51BEEA

secondary

#E8BFAF

accent

#470BDB

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BEEA

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

Preview Lab → · Contrast checker → · Palette generator →