#51BEE6#51BEE6

#51BEE6 is a light, moderate cyan. Relative luminance 0.443; OKLCH L 75.4% C 0.114 H 225.6°. Best body text is #000000 at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#51BEE6
RGB	rgb(81, 190, 230)
HSL	hsl(196, 75%, 61%)
HSV	hsv(196, 65%, 90%)
CMYK	cmyk(64.8%, 17.4%, 0%, 9.8%)
CIE-LAB	lab(72.42, -19.07, -29.14)
CIE-LCH	lch(72.42, 34.83, 236.80°)
OKLab	oklab(75.44% -0.0796 -0.0814)
OKLCH	oklch(75.44% 0.114 225.6)
XYZ	xyz(36.0840, 44.2856, 81.4939)
Luminance	0.4429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEE6 #E67951

analogous

#51E6C3 #51BEE6 #5173E6

triadic

#51BEE6 #E651BE #BEE651

tetradic

#51BEE6 #C351E6 #E67951 #73E651

square

#51BEE6 #C351E6 #E67951 #73E651

split-complementary

#51BEE6 #E65173 #E6C351

monochromatic

#187FA5 #1FA8DA #51BEE6 #87D2EE #BCE6F5

Accessibility & contrast

On white

2.13

#51BEE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.86

#51BEE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEE6

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEE6	#FFFFFF	#000000	##000000
##51BEE6	1.00	2.13	9.86	9.86
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.86	21.00	1.00	1.00
##000000	9.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8BAE8

Deuteranopia (green-blind)

#93ABE6

Tritanopia (blue-blind)

#00CACB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51bee6;
/* rgb */ color: rgb(81, 190, 230);
/* oklch */ color: oklch(75.4% 0.114 225.6);

Tailwind

colors: {
  custom: {
    50: '#91d1ee',
    500: '#51bee6',
    950: '#000000',
  },
}

SCSS

$custom: #51bee6;
$custom-light: #91d1ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51bee6",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 230
  },
  "hsl": {
    "h": 196.107,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.75437,
    "c": 0.11383,
    "h": 225.6
  },
  "luminance": 0.44289
}

Semantic roles & 50–950 ramp

primary

#51BEE6

secondary

#E5BCAD

accent

#440ED7

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BEE6

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

Preview Lab → · Contrast checker → · Palette generator →