#51B0CD#51B0CD

#51B0CD is a light, moderate cyan. Relative luminance 0.372; OKLCH L 71.1% C 0.098 H 220.9°. Best body text is #000000 at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#51B0CD
RGB	rgb(81, 176, 205)
HSL	hsl(194, 55%, 56%)
HSV	hsv(194, 60%, 80%)
CMYK	cmyk(60.5%, 14.1%, 0%, 19.6%)
CIE-LAB	lab(67.43, -19.43, -23.12)
CIE-LCH	lch(67.43, 30.20, 229.95°)
OKLab	oklab(71.14% -0.0744 -0.0643)
OKLCH	oklch(71.14% 0.098 220.9)
XYZ	xyz(29.9337, 37.2048, 63.3495)
Luminance	0.3721 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B0CD #CD6E51

analogous

#51CDAC #51B0CD #5172CD

triadic

#51B0CD #CD51B0 #B0CD51

tetradic

#51B0CD #AC51CD #CD6E51 #72CD51

square

#51B0CD #AC51CD #CD6E51 #72CD51

split-complementary

#51B0CD #CD5172 #CDAC51

monochromatic

#256A7F #3292AF #51B0CD #81C6DB #B0DBE8

Accessibility & contrast

On white

2.49

#51B0CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.44

#51B0CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B0CD

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B0CD	#FFFFFF	#000000	##000000
##51B0CD	1.00	2.49	8.44	8.44
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.44	21.00	1.00	1.00
##000000	8.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FACCF

Deuteranopia (green-blind)

#8D9ECD

Tritanopia (blue-blind)

#00B9B9

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #51b0cd;
/* rgb */ color: rgb(81, 176, 205);
/* oklch */ color: oklch(71.1% 0.098 220.9);

Tailwind

colors: {
  custom: {
    50: '#8dc7dc',
    500: '#51b0cd',
    950: '#000000',
  },
}

SCSS

$custom: #51b0cd;
$custom-light: #8dc7dc;
$custom-dark: #000000;

JSON

{
  "hex": "#51b0cd",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 205
  },
  "hsl": {
    "h": 194.032,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.71142,
    "c": 0.09831,
    "h": 220.9
  },
  "luminance": 0.37208
}

Semantic roles & 50–950 ramp

primary

#51B0CD

secondary

#D7AFA3

accent

#6C49DF

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B0CD

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

Preview Lab → · Contrast checker → · Palette generator →