#51AEFF#51AEFF

#51AEFF is a light, vivid cyan. Relative luminance 0.392; OKLCH L 73.0% C 0.147 H 247.7°. Best body text is #000000 at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#51AEFF
RGB	rgb(81, 174, 255)
HSL	hsl(208, 100%, 66%)
HSV	hsv(208, 68%, 100%)
CMYK	cmyk(68.2%, 31.8%, 0%, 0%)
CIE-LAB	lab(68.92, -2.38, -48.14)
CIE-LCH	lch(68.92, 48.20, 267.17°)
OKLab	oklab(73.01% -0.0558 -0.1364)
OKLCH	oklch(73.01% 0.147 247.7)
XYZ	xyz(36.5726, 39.2375, 100.2345)
Luminance	0.3924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AEFF #FFA251

analogous

#51FFF9 #51AEFF #5157FF

triadic

#51AEFF #FF51AE #AEFF51

tetradic

#51AEFF #F951FF #FFA251 #57FF51

square

#51AEFF #F951FF #FFA251 #57FF51

split-complementary

#51AEFF #FF5157 #FFF951

monochromatic

#0072D6 #1492FF #51AEFF #8ECAFF #CBE7FF

Accessibility & contrast

On white

2.37

#51AEFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.85

#51AEFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEFF

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AEFF	#FFFFFF	#000000	##000000
##51AEFF	1.00	2.37	8.85	8.85
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.85	21.00	1.00	1.00
##000000	8.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AB1FF

Deuteranopia (green-blind)

#71A1FD

Tritanopia (blue-blind)

#00C1CB

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #51aeff;
/* rgb */ color: rgb(81, 174, 255);
/* oklch */ color: oklch(73.0% 0.147 247.7);

Tailwind

colors: {
  custom: {
    50: '#94c5ff',
    500: '#51aeff',
    950: '#000000',
  },
}

SCSS

$custom: #51aeff;
$custom-light: #94c5ff;
$custom-dark: #000000;

JSON

{
  "hex": "#51aeff",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 255
  },
  "hsl": {
    "h": 207.931,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.73007,
    "c": 0.14735,
    "h": 247.7
  },
  "luminance": 0.39241
}

Semantic roles & 50–950 ramp

primary

#51AEFF

secondary

#F3D4B9

accent

#6B00E6

background

#F9FCFF

surface

#F2F8FF

border

#CCD1D7

text

#0F1218

muted

#7E8186

Preview Lab

Preview with #51AEFF

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

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