#51CBF7#51CBF7

#51CBF7 is a light, vivid cyan. Relative luminance 0.512; OKLCH L 79.1% C 0.124 H 225.6°. Best body text is #000000 at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#51CBF7
RGB	rgb(81, 203, 247)
HSL	hsl(196, 91%, 64%)
HSV	hsv(196, 67%, 97%)
CMYK	cmyk(67.2%, 17.8%, 0%, 3.1%)
CIE-LAB	lab(76.78, -20.51, -31.59)
CIE-LCH	lch(76.78, 37.66, 237.00°)
OKLab	oklab(79.14% -0.0864 -0.0883)
OKLCH	oklch(79.14% 0.124 225.6)
XYZ	xyz(41.5310, 51.1720, 95.6661)
Luminance	0.5118 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBF7 #F77D51

analogous

#51F7D0 #51CBF7 #5178F7

triadic

#51CBF7 #F751CB #CBF751

tetradic

#51CBF7 #D051F7 #F77D51 #78F751

square

#51CBF7 #D051F7 #F77D51 #78F751

split-complementary

#51CBF7 #F75178 #F7D051

monochromatic

#0993C5 #16BAF4 #51CBF7 #8CDCFA #C6EEFC

Accessibility & contrast

On white

1.87

#51CBF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.24

#51CBF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBF7

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBF7	#FFFFFF	#000000	##000000
##51CBF7	1.00	1.87	11.24	11.24
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.24	21.00	1.00	1.00
##000000	11.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C7F9

Deuteranopia (green-blind)

#9CB6F6

Tritanopia (blue-blind)

#00D8D9

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cbf7;
/* rgb */ color: rgb(81, 203, 247);
/* oklch */ color: oklch(79.1% 0.124 225.6);

Tailwind

colors: {
  custom: {
    50: '#94dbfa',
    500: '#51cbf7',
    950: '#000000',
  },
}

SCSS

$custom: #51cbf7;
$custom-light: #94dbfa;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbf7",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 247
  },
  "hsl": {
    "h": 195.904,
    "s": 91.209,
    "l": 64.314
  },
  "oklch": {
    "l": 0.79136,
    "c": 0.12353,
    "h": 225.6
  },
  "luminance": 0.51177
}

Semantic roles & 50–950 ramp

primary

#51CBF7

secondary

#C2532B

accent

#3D00E6

background

#FCFEFF

surface

#F5FBFF

border

#CFD4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CBF7

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

Preview Lab → · Contrast checker → · Palette generator →