#51A2E8#51A2E8

#51A2E8 is a light, vivid cyan. Relative luminance 0.334; OKLCH L 69.2% C 0.130 H 247.1°. Best body text is #000000 at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#51A2E8
RGB	rgb(81, 162, 232)
HSL	hsl(208, 77%, 61%)
HSV	hsv(208, 65%, 91%)
CMYK	cmyk(65.1%, 30.2%, 0%, 9%)
CIE-LAB	lab(64.49, -3.25, -42.55)
CIE-LCH	lch(64.49, 42.67, 265.63°)
OKLab	oklab(69.17% -0.0507 -0.1202)
OKLCH	oklch(69.17% 0.13 247.1)
XYZ	xyz(30.8737, 33.4130, 81.1506)
Luminance	0.3342 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A2E8 #E89751

analogous

#51E8E3 #51A2E8 #5157E8

triadic

#51A2E8 #E851A2 #A2E851

tetradic

#51A2E8 #E351E8 #E89751 #57E851

square

#51A2E8 #E351E8 #E89751 #57E851

split-complementary

#51A2E8 #E85157 #E8E351

monochromatic

#1665A8 #1D85DE #51A2E8 #87BFEF #BDDCF6

Accessibility & contrast

On white

2.73

#51A2E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.68

#51A2E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A2E8

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A2E8	#FFFFFF	#000000	##000000
##51A2E8	1.00	2.73	7.68	7.68
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.68	21.00	1.00	1.00
##000000	7.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83A4EB

Deuteranopia (green-blind)

#6E96E7

Tritanopia (blue-blind)

#00B3BB

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51a2e8;
/* rgb */ color: rgb(81, 162, 232);
/* oklch */ color: oklch(69.2% 0.130 247.1);

Tailwind

colors: {
  custom: {
    50: '#90bdef',
    500: '#51a2e8',
    950: '#000000',
  },
}

SCSS

$custom: #51a2e8;
$custom-light: #90bdef;
$custom-dark: #000000;

JSON

{
  "hex": "#51a2e8",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 232
  },
  "hsl": {
    "h": 207.815,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.69173,
    "c": 0.13046,
    "h": 247.1
  },
  "luminance": 0.33416
}

Semantic roles & 50–950 ramp

primary

#51A2E8

secondary

#E7C8AE

accent

#6B0DD9

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51A2E8

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

Preview Lab → · Contrast checker → · Palette generator →