#51ABE1#51ABE1

#51ABE1 is a light, moderate cyan. Relative luminance 0.363; OKLCH L 70.9% C 0.117 H 237.9°. Best body text is #000000 at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#51ABE1
RGB	rgb(81, 171, 225)
HSL	hsl(203, 71%, 60%)
HSV	hsv(203, 64%, 88%)
CMYK	cmyk(64%, 24%, 0%, 11.8%)
CIE-LAB	lab(66.75, -10.53, -35.17)
CIE-LCH	lch(66.75, 36.71, 253.32°)
OKLab	oklab(70.86% -0.062 -0.0988)
OKLCH	oklch(70.86% 0.117 237.9)
XYZ	xyz(31.5416, 36.3082, 76.5655)
Luminance	0.3631 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ABE1 #E18751

analogous

#51E1CF #51ABE1 #5163E1

triadic

#51ABE1 #E151AB #ABE151

tetradic

#51ABE1 #CF51E1 #E18751 #63E151

square

#51ABE1 #CF51E1 #E18751 #63E151

split-complementary

#51ABE1 #E15163 #E1CF51

monochromatic

#1B6C9D #2490D1 #51ABE1 #85C4EA #B9DDF3

Accessibility & contrast

On white

2.54

#51ABE1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.26

#51ABE1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ABE1

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ABE1	#FFFFFF	#000000	##000000
##51ABE1	1.00	2.54	8.26	8.26
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.26	21.00	1.00	1.00
##000000	8.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92AAE4

Deuteranopia (green-blind)

#7E9CE0

Tritanopia (blue-blind)

#00B9BD

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51abe1;
/* rgb */ color: rgb(81, 171, 225);
/* oklch */ color: oklch(70.9% 0.117 237.9);

Tailwind

colors: {
  custom: {
    50: '#8fc3ea',
    500: '#51abe1',
    950: '#000000',
  },
}

SCSS

$custom: #51abe1;
$custom-light: #8fc3ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51abe1",
  "rgb": {
    "r": 81,
    "g": 171,
    "b": 225
  },
  "hsl": {
    "h": 202.5,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.7086,
    "c": 0.1166,
    "h": 237.9
  },
  "luminance": 0.36311
}

Semantic roles & 50–950 ramp

primary

#51ABE1

secondary

#E3C0AB

accent

#7E3AED

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51ABE1

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

Preview Lab → · Contrast checker → · Palette generator →