#51A5EA#51A5EA

#51A5EA is a light, vivid cyan. Relative luminance 0.346; OKLCH L 69.9% C 0.130 H 246.0°. Best body text is #000000 at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#51A5EA
RGB	rgb(81, 165, 234)
HSL	hsl(207, 78%, 62%)
HSV	hsv(207, 65%, 92%)
CMYK	cmyk(65.4%, 29.5%, 0%, 8.2%)
CIE-LAB	lab(65.43, -4.28, -42.17)
CIE-LCH	lch(65.43, 42.39, 264.20°)
OKLab	oklab(69.94% -0.0531 -0.1191)
OKLCH	oklch(69.94% 0.13 246)
XYZ	xyz(31.6942, 34.5969, 82.8335)
Luminance	0.3460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A5EA #EA9651

analogous

#51EAE3 #51A5EA #5159EA

triadic

#51A5EA #EA51A5 #A5EA51

tetradic

#51A5EA #E351EA #EA9651 #59EA51

square

#51A5EA #E351EA #EA9651 #59EA51

split-complementary

#51A5EA #EA5159 #EAE351

monochromatic

#1568AC #1B89E2 #51A5EA #88C1F1 #BEDDF7

Accessibility & contrast

On white

2.65

#51A5EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.92

#51A5EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A5EA

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A5EA	#FFFFFF	#000000	##000000
##51A5EA	1.00	2.65	7.92	7.92
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.92	21.00	1.00	1.00
##000000	7.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A7ED

Deuteranopia (green-blind)

#7198E9

Tritanopia (blue-blind)

#00B6BD

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51a5ea;
/* rgb */ color: rgb(81, 165, 234);
/* oklch */ color: oklch(69.9% 0.130 246.0);

Tailwind

colors: {
  custom: {
    50: '#90bff1',
    500: '#51a5ea',
    950: '#000000',
  },
}

SCSS

$custom: #51a5ea;
$custom-light: #90bff1;
$custom-dark: #000000;

JSON

{
  "hex": "#51a5ea",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 234
  },
  "hsl": {
    "h": 207.059,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.69943,
    "c": 0.13039,
    "h": 246
  },
  "luminance": 0.346
}

Semantic roles & 50–950 ramp

primary

#51A5EA

secondary

#E8C9AF

accent

#690BDB

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A5EA

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

Preview Lab → · Contrast checker → · Palette generator →