#51A2EC#51A2EC

#51A2EC is a light, vivid cyan. Relative luminance 0.336; OKLCH L 69.4% C 0.135 H 248.5°. Best body text is #000000 at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#51A2EC
RGB	rgb(81, 162, 236)
HSL	hsl(209, 80%, 62%)
HSV	hsv(209, 66%, 93%)
CMYK	cmyk(65.7%, 31.4%, 0%, 7.5%)
CIE-LAB	lab(64.68, -1.93, -44.46)
CIE-LCH	lch(64.68, 44.50, 267.52°)
OKLab	oklab(69.38% -0.0495 -0.1258)
OKLCH	oklch(69.38% 0.135 248.5)
XYZ	xyz(31.4483, 33.6429, 84.1770)
Luminance	0.3365 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A2EC #EC9B51

analogous

#51ECE8 #51A2EC #5155EC

triadic

#51A2EC #EC51A2 #A2EC51

tetradic

#51A2EC #E851EC #EC9B51 #55EC51

square

#51A2EC #E851EC #EC9B51 #55EC51

split-complementary

#51A2EC #EC5155 #ECE851

monochromatic

#1365AF #1A85E6 #51A2EC #88BFF2 #BFDDF8

Accessibility & contrast

On white

2.72

#51A2EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.73

#51A2EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A2EC

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A2EC	#FFFFFF	#000000	##000000
##51A2EC	1.00	2.72	7.73	7.73
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.73	21.00	1.00	1.00
##000000	7.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81A5EF

Deuteranopia (green-blind)

#6C96EB

Tritanopia (blue-blind)

#00B4BC

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51a2ec;
/* rgb */ color: rgb(81, 162, 236);
/* oklch */ color: oklch(69.4% 0.135 248.5);

Tailwind

colors: {
  custom: {
    50: '#91bdf2',
    500: '#51a2ec',
    950: '#000000',
  },
}

SCSS

$custom: #51a2ec;
$custom-light: #91bdf2;
$custom-dark: #000000;

JSON

{
  "hex": "#51a2ec",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 236
  },
  "hsl": {
    "h": 208.645,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.69379,
    "c": 0.13517,
    "h": 248.5
  },
  "luminance": 0.33646
}

Semantic roles & 50–950 ramp

primary

#51A2EC

secondary

#E9CBB0

accent

#6E09DD

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #51A2EC

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

Preview Lab → · Contrast checker → · Palette generator →