#51B2CC#51B2CC

#51B2CC is a light, moderate cyan. Relative luminance 0.380; OKLCH L 71.6% C 0.098 H 218.1°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#51B2CC
RGB	rgb(81, 178, 204)
HSL	hsl(193, 55%, 56%)
HSV	hsv(193, 60%, 80%)
CMYK	cmyk(60.3%, 12.7%, 0%, 20%)
CIE-LAB	lab(67.98, -20.77, -21.73)
CIE-LCH	lch(67.98, 30.06, 226.29°)
OKLab	oklab(71.57% -0.0769 -0.0604)
OKLCH	oklch(71.57% 0.098 218.1)
XYZ	xyz(30.2084, 37.9467, 62.8475)
Luminance	0.3795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B2CC #CC6B51

analogous

#51CCA8 #51B2CC #5174CC

triadic

#51B2CC #CC51B2 #B2CC51

tetradic

#51B2CC #A851CC #CC6B51 #74CC51

square

#51B2CC #A851CC #CC6B51 #74CC51

split-complementary

#51B2CC #CC5174 #CCA851

monochromatic

#256B7E #3393AD #51B2CC #80C7DA #B0DCE8

Accessibility & contrast

On white

2.44

#51B2CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#51B2CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B2CC

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B2CC	#FFFFFF	#000000	##000000
##51B2CC	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1ADCD

Deuteranopia (green-blind)

#8FA0CC

Tritanopia (blue-blind)

#00BBBA

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b2cc;
/* rgb */ color: rgb(81, 178, 204);
/* oklch */ color: oklch(71.6% 0.098 218.1);

Tailwind

colors: {
  custom: {
    50: '#8dc9db',
    500: '#51b2cc',
    950: '#000000',
  },
}

SCSS

$custom: #51b2cc;
$custom-light: #8dc9db;
$custom-dark: #000000;

JSON

{
  "hex": "#51b2cc",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 204
  },
  "hsl": {
    "h": 192.683,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71572,
    "c": 0.09775,
    "h": 218.1
  },
  "luminance": 0.3795
}

Semantic roles & 50–950 ramp

primary

#51B2CC

secondary

#D6AEA3

accent

#694ADE

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B2CC

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

Preview Lab → · Contrast checker → · Palette generator →