#51BBD6#51BBD6

#51BBD6 is a light, moderate cyan. Relative luminance 0.421; OKLCH L 74.1% C 0.104 H 217.4°. Best body text is #000000 at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#51BBD6
RGB	rgb(81, 187, 214)
HSL	hsl(192, 62%, 58%)
HSV	hsv(192, 62%, 84%)
CMYK	cmyk(62.1%, 12.6%, 0%, 16.1%)
CIE-LAB	lab(70.97, -22.39, -22.66)
CIE-LCH	lch(70.97, 31.86, 225.33°)
OKLab	oklab(74.08% -0.0825 -0.063)
OKLCH	oklch(74.08% 0.104 217.4)
XYZ	xyz(33.2963, 42.1416, 69.9847)
Luminance	0.4214 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BBD6 #D66C51

analogous

#51D6AE #51BBD6 #5179D6

triadic

#51BBD6 #D651BB #BBD651

tetradic

#51BBD6 #AE51D6 #D66C51 #79D651

square

#51BBD6 #AE51D6 #D66C51 #79D651

split-complementary

#51BBD6 #D65179 #D6AE51

monochromatic

#21768C #2DA0BD #51BBD6 #83CEE2 #B4E2ED

Accessibility & contrast

On white

2.23

#51BBD6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.43

#51BBD6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BBD6

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BBD6	#FFFFFF	#000000	##000000
##51BBD6	1.00	2.23	9.43	9.43
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.43	21.00	1.00	1.00
##000000	9.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B6D8

Deuteranopia (green-blind)

#96A8D6

Tritanopia (blue-blind)

#00C5C3

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #51bbd6;
/* rgb */ color: rgb(81, 187, 214);
/* oklch */ color: oklch(74.1% 0.104 217.4);

Tailwind

colors: {
  custom: {
    50: '#8fcfe2',
    500: '#51bbd6',
    950: '#000000',
  },
}

SCSS

$custom: #51bbd6;
$custom-light: #8fcfe2;
$custom-dark: #000000;

JSON

{
  "hex": "#51bbd6",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 214
  },
  "hsl": {
    "h": 192.18,
    "s": 61.86,
    "l": 57.843
  },
  "oklch": {
    "l": 0.74083,
    "c": 0.1038,
    "h": 217.4
  },
  "luminance": 0.42145
}

Semantic roles & 50–950 ramp

primary

#51BBD6

secondary

#DCB2A7

accent

#6443E5

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #51BBD6

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

Preview Lab → · Contrast checker → · Palette generator →