#51AFE6#51AFE6

#51AFE6 is a light, moderate cyan. Relative luminance 0.381; OKLCH L 72.0% C 0.119 H 237.4°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#51AFE6
RGB	rgb(81, 175, 230)
HSL	hsl(202, 75%, 61%)
HSV	hsv(202, 65%, 90%)
CMYK	cmyk(64.8%, 23.9%, 0%, 9.8%)
CIE-LAB	lab(68.11, -11.11, -35.81)
CIE-LCH	lch(68.11, 37.49, 252.76°)
OKLab	oklab(72% -0.0644 -0.1006)
OKLCH	oklch(72% 0.119 237.4)
XYZ	xyz(33.0007, 38.1190, 80.4661)
Luminance	0.3812 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AFE6 #E68851

analogous

#51E6D3 #51AFE6 #5164E6

triadic

#51AFE6 #E651AF #AFE651

tetradic

#51AFE6 #D351E6 #E68851 #64E651

square

#51AFE6 #D351E6 #E68851 #64E651

split-complementary

#51AFE6 #E65164 #E6D351

monochromatic

#1871A5 #1F95DA #51AFE6 #87C8EE #BCE0F5

Accessibility & contrast

On white

2.43

#51AFE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#51AFE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AFE6

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AFE6	#FFFFFF	#000000	##000000
##51AFE6	1.00	2.43	8.62	8.62
#FFFFFF	2.43	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95AEE9

Deuteranopia (green-blind)

#819FE5

Tritanopia (blue-blind)

#00BDC2

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51afe6;
/* rgb */ color: rgb(81, 175, 230);
/* oklch */ color: oklch(72.0% 0.119 237.4);

Tailwind

colors: {
  custom: {
    50: '#90c6ee',
    500: '#51afe6',
    950: '#000000',
  },
}

SCSS

$custom: #51afe6;
$custom-light: #90c6ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51afe6",
  "rgb": {
    "r": 81,
    "g": 175,
    "b": 230
  },
  "hsl": {
    "h": 202.148,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.72003,
    "c": 0.11943,
    "h": 237.4
  },
  "luminance": 0.38122
}

Semantic roles & 50–950 ramp

primary

#51AFE6

secondary

#E5C2AD

accent

#590ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AFE6

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

Preview Lab → · Contrast checker → · Palette generator →