#51A7CD#51A7CD

#51A7CD is a light, moderate cyan. Relative luminance 0.338; OKLCH L 69.0% C 0.100 H 229.5°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#51A7CD
RGB	rgb(81, 167, 205)
HSL	hsl(198, 55%, 56%)
HSV	hsv(198, 60%, 80%)
CMYK	cmyk(60.5%, 18.5%, 0%, 19.6%)
CIE-LAB	lab(64.80, -14.67, -27.16)
CIE-LCH	lch(64.80, 30.87, 241.62°)
OKLab	oklab(69.04% -0.0647 -0.0758)
OKLCH	oklch(69.04% 0.1 229.5)
XYZ	xyz(28.2272, 33.7918, 62.7807)
Luminance	0.3379 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A7CD #CD7751

analogous

#51CDB5 #51A7CD #5169CD

triadic

#51A7CD #CD51A7 #A7CD51

tetradic

#51A7CD #B551CD #CD7751 #69CD51

square

#51A7CD #B551CD #CD7751 #69CD51

split-complementary

#51A7CD #CD5169 #CDB551

monochromatic

#25637F #3288AF #51A7CD #81BFDB #B0D7E8

Accessibility & contrast

On white

2.71

#51A7CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.76

#51A7CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7CD

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A7CD	#FFFFFF	#000000	##000000
##51A7CD	1.00	2.71	7.76	7.76
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.76	21.00	1.00	1.00
##000000	7.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A5CF

Deuteranopia (green-blind)

#8298CC

Tritanopia (blue-blind)

#00B2B3

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a7cd;
/* rgb */ color: rgb(81, 167, 205);
/* oklch */ color: oklch(69.0% 0.100 229.5);

Tailwind

colors: {
  custom: {
    50: '#8dc1dc',
    500: '#51a7cd',
    950: '#000000',
  },
}

SCSS

$custom: #51a7cd;
$custom-light: #8dc1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#51a7cd",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 205
  },
  "hsl": {
    "h": 198.387,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.69039,
    "c": 0.09968,
    "h": 229.5
  },
  "luminance": 0.33795
}

Semantic roles & 50–950 ramp

primary

#51A7CD

secondary

#D7B3A3

accent

#7749DF

background

#F9FBFD

surface

#F1F7FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51A7CD

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

Preview Lab → · Contrast checker → · Palette generator →