#51CBF8#51CBF8

#51CBF8 is a light, vivid cyan. Relative luminance 0.512; OKLCH L 79.2% C 0.124 H 226.2°. Best body text is #000000 at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#51CBF8
RGB	rgb(81, 203, 248)
HSL	hsl(196, 92%, 65%)
HSV	hsv(196, 67%, 97%)
CMYK	cmyk(67.3%, 18.1%, 0%, 2.7%)
CIE-LAB	lab(76.82, -20.20, -32.06)
CIE-LCH	lch(76.82, 37.90, 237.79°)
OKLab	oklab(79.18% -0.086 -0.0897)
OKLCH	oklch(79.18% 0.124 226.2)
XYZ	xyz(41.6857, 51.2339, 96.4809)
Luminance	0.5124 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBF8 #F87E51

analogous

#51F8D2 #51CBF8 #5177F8

triadic

#51CBF8 #F851CB #CBF851

tetradic

#51CBF8 #D251F8 #F87E51 #77F851

square

#51CBF8 #D251F8 #F87E51 #77F851

split-complementary

#51CBF8 #F85177 #F8D251

monochromatic

#0893C7 #16B9F6 #51CBF8 #8CDDFA #C7EEFD

Accessibility & contrast

On white

1.87

#51CBF8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.25

#51CBF8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBF8

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBF8	#FFFFFF	#000000	##000000
##51CBF8	1.00	1.87	11.25	11.25
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.25	21.00	1.00	1.00
##000000	11.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C7FA

Deuteranopia (green-blind)

#9CB6F7

Tritanopia (blue-blind)

#00D8DA

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51cbf8;
/* rgb */ color: rgb(81, 203, 248);
/* oklch */ color: oklch(79.2% 0.124 226.2);

Tailwind

colors: {
  custom: {
    50: '#94dbfa',
    500: '#51cbf8',
    950: '#000000',
  },
}

SCSS

$custom: #51cbf8;
$custom-light: #94dbfa;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbf8",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 248
  },
  "hsl": {
    "h": 196.168,
    "s": 92.265,
    "l": 64.51
  },
  "oklch": {
    "l": 0.79179,
    "c": 0.12427,
    "h": 226.2
  },
  "luminance": 0.51239
}

Semantic roles & 50–950 ramp

primary

#51CBF8

secondary

#C3532A

accent

#3E00E6

background

#FCFEFF

surface

#F5FBFF

border

#CFD4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CBF8

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

Preview Lab → · Contrast checker → · Palette generator →