#51BEE1#51BEE1

#51BEE1 is a light, moderate cyan. Relative luminance 0.440; OKLCH L 75.2% C 0.110 H 222.4°. Best body text is #000000 at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#51BEE1
RGB	rgb(81, 190, 225)
HSL	hsl(195, 71%, 60%)
HSV	hsv(195, 64%, 88%)
CMYK	cmyk(64%, 15.6%, 0%, 11.8%)
CIE-LAB	lab(72.23, -20.61, -26.71)
CIE-LCH	lch(72.23, 33.73, 232.35°)
OKLab	oklab(75.23% -0.0814 -0.0745)
OKLCH	oklch(75.23% 0.11 222.4)
XYZ	xyz(35.3919, 44.0087, 77.8489)
Luminance	0.4401 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEE1 #E17451

analogous

#51E1BC #51BEE1 #5176E1

triadic

#51BEE1 #E151BE #BEE151

tetradic

#51BEE1 #BC51E1 #E17451 #76E151

square

#51BEE1 #BC51E1 #E17451 #76E151

split-complementary

#51BEE1 #E15176 #E1BC51

monochromatic

#1B7D9D #24A7D1 #51BEE1 #85D2EA #B9E5F3

Accessibility & contrast

On white

2.14

#51BEE1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.80

#51BEE1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEE1

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEE1	#FFFFFF	#000000	##000000
##51BEE1	1.00	2.14	9.80	9.80
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.80	21.00	1.00	1.00
##000000	9.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABAE3

Deuteranopia (green-blind)

#95ABE1

Tritanopia (blue-blind)

#00C9C9

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51bee1;
/* rgb */ color: rgb(81, 190, 225);
/* oklch */ color: oklch(75.2% 0.110 222.4);

Tailwind

colors: {
  custom: {
    50: '#90d1ea',
    500: '#51bee1',
    950: '#000000',
  },
}

SCSS

$custom: #51bee1;
$custom-light: #90d1ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51bee1",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 225
  },
  "hsl": {
    "h": 194.583,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.75228,
    "c": 0.11034,
    "h": 222.4
  },
  "luminance": 0.44012
}

Semantic roles & 50–950 ramp

primary

#51BEE1

secondary

#E3B9AB

accent

#663AED

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BEE1

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

Preview Lab → · Contrast checker → · Palette generator →