#51BDEB#51BDEB

#51BDEB is a light, moderate cyan. Relative luminance 0.441; OKLCH L 75.4% C 0.118 H 229.4°. Best body text is #000000 at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#51BDEB
RGB	rgb(81, 189, 235)
HSL	hsl(198, 79%, 62%)
HSV	hsv(198, 66%, 92%)
CMYK	cmyk(65.5%, 19.6%, 0%, 7.8%)
CIE-LAB	lab(72.32, -17.00, -32.00)
CIE-LCH	lch(72.32, 36.24, 242.03°)
OKLab	oklab(75.42% -0.0768 -0.0896)
OKLCH	oklch(75.42% 0.118 229.4)
XYZ	xyz(36.5804, 44.1388, 85.1729)
Luminance	0.4414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BDEB #EB7F51

analogous

#51EBCC #51BDEB #5170EB

triadic

#51BDEB #EB51BD #BDEB51

tetradic

#51BDEB #CC51EB #EB7F51 #70EB51

square

#51BDEB #CC51EB #EB7F51 #70EB51

split-complementary

#51BDEB #EB5170 #EBCC51

monochromatic

#1480AE #1AA8E5 #51BDEB #88D2F1 #BFE7F8

Accessibility & contrast

On white

2.14

#51BDEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.83

#51BDEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BDEB

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BDEB	#FFFFFF	#000000	##000000
##51BDEB	1.00	2.14	9.83	9.83
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.83	21.00	1.00	1.00
##000000	9.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BAED

Deuteranopia (green-blind)

#90ABEA

Tritanopia (blue-blind)

#00CACC

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51bdeb;
/* rgb */ color: rgb(81, 189, 235);
/* oklch */ color: oklch(75.4% 0.118 229.4);

Tailwind

colors: {
  custom: {
    50: '#92d1f1',
    500: '#51bdeb',
    950: '#000000',
  },
}

SCSS

$custom: #51bdeb;
$custom-light: #92d1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51bdeb",
  "rgb": {
    "r": 81,
    "g": 189,
    "b": 235
  },
  "hsl": {
    "h": 197.922,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.75421,
    "c": 0.11798,
    "h": 229.4
  },
  "luminance": 0.44143
}

Semantic roles & 50–950 ramp

primary

#51BDEB

secondary

#E8C0B0

accent

#490ADC

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BDEB

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

Preview Lab → · Contrast checker → · Palette generator →