#51AFE1#51AFE1

#51AFE1 is a light, moderate cyan. Relative luminance 0.378; OKLCH L 71.8% C 0.115 H 234.8°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#51AFE1
RGB	rgb(81, 175, 225)
HSL	hsl(201, 71%, 60%)
HSV	hsv(201, 64%, 88%)
CMYK	cmyk(64%, 22.2%, 0%, 11.8%)
CIE-LAB	lab(67.90, -12.71, -33.39)
CIE-LCH	lch(67.90, 35.72, 249.16°)
OKLab	oklab(71.77% -0.0661 -0.0936)
OKLCH	oklch(71.77% 0.115 234.8)
XYZ	xyz(32.3087, 37.8422, 76.8211)
Luminance	0.3785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AFE1 #E18351

analogous

#51E1CB #51AFE1 #5167E1

triadic

#51AFE1 #E151AF #AFE151

tetradic

#51AFE1 #CB51E1 #E18351 #67E151

square

#51AFE1 #CB51E1 #E18351 #67E151

split-complementary

#51AFE1 #E15167 #E1CB51

monochromatic

#1B709D #2495D1 #51AFE1 #85C7EA #B9DFF3

Accessibility & contrast

On white

2.45

#51AFE1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#51AFE1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AFE1

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AFE1	#FFFFFF	#000000	##000000
##51AFE1	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97AEE3

Deuteranopia (green-blind)

#839FE0

Tritanopia (blue-blind)

#00BCC0

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51afe1;
/* rgb */ color: rgb(81, 175, 225);
/* oklch */ color: oklch(71.8% 0.115 234.8);

Tailwind

colors: {
  custom: {
    50: '#90c6ea',
    500: '#51afe1',
    950: '#000000',
  },
}

SCSS

$custom: #51afe1;
$custom-light: #90c6ea;
$custom-dark: #000000;

JSON

{
  "hex": "#51afe1",
  "rgb": {
    "r": 81,
    "g": 175,
    "b": 225
  },
  "hsl": {
    "h": 200.833,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.71773,
    "c": 0.11458,
    "h": 234.8
  },
  "luminance": 0.37846
}

Semantic roles & 50–950 ramp

primary

#51AFE1

secondary

#E3BEAB

accent

#793AED

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AFE1

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

Preview Lab → · Contrast checker → · Palette generator →