#51BEE3#51BEE3

#51BEE3 is a light, moderate cyan. Relative luminance 0.441; OKLCH L 75.3% C 0.112 H 223.8°. Best body text is #000000 at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#51BEE3
RGB	rgb(81, 190, 227)
HSL	hsl(195, 72%, 60%)
HSV	hsv(195, 64%, 89%)
CMYK	cmyk(64.3%, 16.3%, 0%, 11%)
CIE-LAB	lab(72.31, -19.99, -27.68)
CIE-LCH	lch(72.31, 34.15, 234.16°)
OKLab	oklab(75.31% -0.0807 -0.0772)
OKLCH	oklch(75.31% 0.112 223.8)
XYZ	xyz(35.6664, 44.1185, 79.2942)
Luminance	0.4412 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEE3 #E37651

analogous

#51E3BF #51BEE3 #5175E3

triadic

#51BEE3 #E351BE #BEE351

tetradic

#51BEE3 #BF51E3 #E37651 #75E351

square

#51BEE3 #BF51E3 #E37651 #75E351

split-complementary

#51BEE3 #E35175 #E3BF51

monochromatic

#1A7EA0 #22A7D5 #51BEE3 #86D2EB #BAE5F4

Accessibility & contrast

On white

2.14

#51BEE3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.82

#51BEE3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEE3

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEE3	#FFFFFF	#000000	##000000
##51BEE3	1.00	2.14	9.82	9.82
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.82	21.00	1.00	1.00
##000000	9.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9BAE5

Deuteranopia (green-blind)

#94ABE3

Tritanopia (blue-blind)

#00C9CA

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51bee3;
/* rgb */ color: rgb(81, 190, 227);
/* oklch */ color: oklch(75.3% 0.112 223.8);

Tailwind

colors: {
  custom: {
    50: '#91d1ec',
    500: '#51bee3',
    950: '#000000',
  },
}

SCSS

$custom: #51bee3;
$custom-light: #91d1ec;
$custom-dark: #000000;

JSON

{
  "hex": "#51bee3",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 227
  },
  "hsl": {
    "h": 195.205,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.75311,
    "c": 0.11169,
    "h": 223.8
  },
  "luminance": 0.44122
}

Semantic roles & 50–950 ramp

primary

#51BEE3

secondary

#E4BAAC

accent

#4311D4

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BEE3

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

Preview Lab → · Contrast checker → · Palette generator →