#51CBE7#51CBE7

#51CBE7 is a light, moderate cyan. Relative luminance 0.502; OKLCH L 78.5% C 0.114 H 215.7°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#51CBE7
RGB	rgb(81, 203, 231)
HSL	hsl(191, 76%, 61%)
HSV	hsv(191, 65%, 91%)
CMYK	cmyk(64.9%, 12.1%, 0%, 9.4%)
CIE-LAB	lab(76.21, -25.37, -23.88)
CIE-LCH	lch(76.21, 34.84, 223.26°)
OKLab	oklab(78.49% -0.0923 -0.0664)
OKLCH	oklch(78.49% 0.114 215.7)
XYZ	xyz(39.1671, 50.2265, 83.2163)
Luminance	0.5023 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBE7 #E76D51

analogous

#51E7B8 #51CBE7 #5180E7

triadic

#51CBE7 #E751CB #CBE751

tetradic

#51CBE7 #B851E7 #E76D51 #80E751

square

#51CBE7 #B851E7 #E76D51 #80E751

split-complementary

#51CBE7 #E75180 #E7B851

monochromatic

#178CA7 #1EB9DC #51CBE7 #87DBEE #BDEBF6

Accessibility & contrast

On white

1.90

#51CBE7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#51CBE7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBE7

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBE7	#FFFFFF	#000000	##000000
##51CBE7	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C5E9

Deuteranopia (green-blind)

#A2B5E7

Tritanopia (blue-blind)

#00D5D4

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #51cbe7;
/* rgb */ color: rgb(81, 203, 231);
/* oklch */ color: oklch(78.5% 0.114 215.7);

Tailwind

colors: {
  custom: {
    50: '#92dbee',
    500: '#51cbe7',
    950: '#000000',
  },
}

SCSS

$custom: #51cbe7;
$custom-light: #92dbee;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbe7",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 231
  },
  "hsl": {
    "h": 191.2,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.78485,
    "c": 0.11374,
    "h": 215.7
  },
  "luminance": 0.50231
}

Semantic roles & 50–950 ramp

primary

#51CBE7

secondary

#A84A34

accent

#330ED8

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CBE7

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

Preview Lab → · Contrast checker → · Palette generator →