#51B0E2#51B0E2

#51B0E2 is a light, moderate cyan. Relative luminance 0.383; OKLCH L 72.0% C 0.115 H 234.5°. Best body text is #000000 at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#51B0E2
RGB	rgb(81, 176, 226)
HSL	hsl(201, 71%, 60%)
HSV	hsv(201, 64%, 89%)
CMYK	cmyk(64.2%, 22.1%, 0%, 11.4%)
CIE-LAB	lab(68.23, -12.93, -33.43)
CIE-LCH	lch(68.23, 35.84, 248.86°)
OKLab	oklab(72.05% -0.0667 -0.0937)
OKLCH	oklch(72.05% 0.115 234.5)
XYZ	xyz(32.6408, 38.2876, 77.6068)
Luminance	0.3829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B0E2 #E28351

analogous

#51E2CC #51B0E2 #5167E2

triadic

#51B0E2 #E251B0 #B0E251

tetradic

#51B0E2 #CC51E2 #E28351 #67E251

square

#51B0E2 #CC51E2 #E28351 #67E251

split-complementary

#51B0E2 #E25167 #E2CC51

monochromatic

#1A719E #2396D3 #51B0E2 #85C8EB #BAE0F3

Accessibility & contrast

On white

2.43

#51B0E2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.66

#51B0E2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B0E2

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B0E2	#FFFFFF	#000000	##000000
##51B0E2	1.00	2.43	8.66	8.66
#FFFFFF	2.43	1.00	21.00	21.00
#000000	8.66	21.00	1.00	1.00
##000000	8.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98AFE4

Deuteranopia (green-blind)

#84A0E1

Tritanopia (blue-blind)

#00BDC1

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b0e2;
/* rgb */ color: rgb(81, 176, 226);
/* oklch */ color: oklch(72.0% 0.115 234.5);

Tailwind

colors: {
  custom: {
    50: '#90c7eb',
    500: '#51b0e2',
    950: '#000000',
  },
}

SCSS

$custom: #51b0e2;
$custom-light: #90c7eb;
$custom-dark: #000000;

JSON

{
  "hex": "#51b0e2",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 226
  },
  "hsl": {
    "h": 200.69,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.72047,
    "c": 0.11506,
    "h": 234.5
  },
  "luminance": 0.38291
}

Semantic roles & 50–950 ramp

primary

#51B0E2

secondary

#E3BFAC

accent

#5512D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51B0E2

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

Preview Lab → · Contrast checker → · Palette generator →