#51BFEE#51BFEE

#51BFEE is a light, moderate cyan. Relative luminance 0.452; OKLCH L 76.0% C 0.120 H 229.6°. Best body text is #000000 at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#51BFEE
RGB	rgb(81, 191, 238)
HSL	hsl(198, 82%, 63%)
HSV	hsv(198, 66%, 93%)
CMYK	cmyk(66%, 19.7%, 0%, 6.7%)
CIE-LAB	lab(73.01, -17.11, -32.56)
CIE-LCH	lch(73.01, 36.78, 242.28°)
OKLab	oklab(76.01% -0.0777 -0.0912)
OKLCH	oklch(76.01% 0.12 229.6)
XYZ	xyz(37.4506, 45.1800, 87.6192)
Luminance	0.4518 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFEE #EE8051

analogous

#51EECF #51BFEE #5170EE

triadic

#51BFEE #EE51BF #BFEE51

tetradic

#51BFEE #CF51EE #EE8051 #70EE51

square

#51BFEE #CF51EE #EE8051 #70EE51

split-complementary

#51BFEE #EE5170 #EECF51

monochromatic

#1183B3 #19AAE9 #51BFEE #89D4F3 #C1E8F9

Accessibility & contrast

On white

2.09

#51BFEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.04

#51BFEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFEE

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFEE	#FFFFFF	#000000	##000000
##51BFEE	1.00	2.09	10.04	10.04
#FFFFFF	2.09	1.00	21.00	21.00
#000000	10.04	21.00	1.00	1.00
##000000	10.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BCF0

Deuteranopia (green-blind)

#91ACED

Tritanopia (blue-blind)

#00CCCE

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51bfee;
/* rgb */ color: rgb(81, 191, 238);
/* oklch */ color: oklch(76.0% 0.120 229.6);

Tailwind

colors: {
  custom: {
    50: '#92d2f3',
    500: '#51bfee',
    950: '#000000',
  },
}

SCSS

$custom: #51bfee;
$custom-light: #92d2f3;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfee",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 238
  },
  "hsl": {
    "h": 197.962,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.76009,
    "c": 0.1198,
    "h": 229.6
  },
  "luminance": 0.45184
}

Semantic roles & 50–950 ramp

primary

#51BFEE

secondary

#EAC2B1

accent

#4707DF

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1417

muted

#7E8285

Preview Lab

Preview with #51BFEE

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

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