#51A1EA#51A1EA

#51A1EA is a light, vivid cyan. Relative luminance 0.332; OKLCH L 69.1% C 0.134 H 248.4°. Best body text is #000000 at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#51A1EA
RGB	rgb(81, 161, 234)
HSL	hsl(209, 78%, 62%)
HSV	hsv(209, 65%, 92%)
CMYK	cmyk(65.4%, 31.2%, 0%, 8.2%)
CIE-LAB	lab(64.30, -2.02, -43.95)
CIE-LCH	lch(64.30, 43.99, 267.37°)
OKLab	oklab(69.05% -0.0491 -0.1243)
OKLCH	oklch(69.05% 0.134 248.4)
XYZ	xyz(30.9840, 33.1764, 82.5968)
Luminance	0.3318 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A1EA #EA9A51

analogous

#51EAE6 #51A1EA #5155EA

triadic

#51A1EA #EA51A1 #A1EA51

tetradic

#51A1EA #E651EA #EA9A51 #55EA51

square

#51A1EA #E651EA #EA9A51 #55EA51

split-complementary

#51A1EA #EA5155 #EAE651

monochromatic

#1564AC #1B83E2 #51A1EA #88BFF1 #BEDCF7

Accessibility & contrast

On white

2.75

#51A1EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.64

#51A1EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A1EA

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A1EA	#FFFFFF	#000000	##000000
##51A1EA	1.00	2.75	7.64	7.64
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.64	21.00	1.00	1.00
##000000	7.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81A4ED

Deuteranopia (green-blind)

#6C95E9

Tritanopia (blue-blind)

#00B2BB

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a1ea;
/* rgb */ color: rgb(81, 161, 234);
/* oklch */ color: oklch(69.1% 0.134 248.4);

Tailwind

colors: {
  custom: {
    50: '#90bcf1',
    500: '#51a1ea',
    950: '#000000',
  },
}

SCSS

$custom: #51a1ea;
$custom-light: #90bcf1;
$custom-dark: #000000;

JSON

{
  "hex": "#51a1ea",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 234
  },
  "hsl": {
    "h": 208.627,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.69053,
    "c": 0.13364,
    "h": 248.4
  },
  "luminance": 0.3318
}

Semantic roles & 50–950 ramp

primary

#51A1EA

secondary

#E8CAAF

accent

#6E0BDB

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A1EA

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

Preview Lab → · Contrast checker → · Palette generator →