#51A4EA#51A4EA

#51A4EA is a light, vivid cyan. Relative luminance 0.342; OKLCH L 69.7% C 0.131 H 246.6°. Best body text is #000000 at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#51A4EA
RGB	rgb(81, 164, 234)
HSL	hsl(207, 78%, 62%)
HSV	hsv(207, 65%, 92%)
CMYK	cmyk(65.4%, 29.9%, 0%, 8.2%)
CIE-LAB	lab(65.15, -3.72, -42.62)
CIE-LCH	lch(65.15, 42.78, 265.01°)
OKLab	oklab(69.72% -0.0521 -0.1204)
OKLCH	oklch(69.72% 0.131 246.6)
XYZ	xyz(31.5145, 34.2375, 82.7736)
Luminance	0.3424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A4EA #EA9751

analogous

#51EAE4 #51A4EA #5158EA

triadic

#51A4EA #EA51A4 #A4EA51

tetradic

#51A4EA #E451EA #EA9751 #58EA51

square

#51A4EA #E451EA #EA9751 #58EA51

split-complementary

#51A4EA #EA5158 #EAE451

monochromatic

#1567AC #1B87E2 #51A4EA #88C1F1 #BEDDF7

Accessibility & contrast

On white

2.68

#51A4EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.85

#51A4EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A4EA

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A4EA	#FFFFFF	#000000	##000000
##51A4EA	1.00	2.68	7.85	7.85
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.85	21.00	1.00	1.00
##000000	7.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A6ED

Deuteranopia (green-blind)

#7097E9

Tritanopia (blue-blind)

#00B5BD

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51a4ea;
/* rgb */ color: rgb(81, 164, 234);
/* oklch */ color: oklch(69.7% 0.131 246.6);

Tailwind

colors: {
  custom: {
    50: '#90bef1',
    500: '#51a4ea',
    950: '#000000',
  },
}

SCSS

$custom: #51a4ea;
$custom-light: #90bef1;
$custom-dark: #000000;

JSON

{
  "hex": "#51a4ea",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 234
  },
  "hsl": {
    "h": 207.451,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.6972,
    "c": 0.13118,
    "h": 246.6
  },
  "luminance": 0.34241
}

Semantic roles & 50–950 ramp

primary

#51A4EA

secondary

#E8C9AF

accent

#6A0BDB

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A4EA

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

Preview Lab → · Contrast checker → · Palette generator →