#51B0F2#51B0F2

#51B0F2 is a light, vivid cyan. Relative luminance 0.392; OKLCH L 72.8% C 0.131 H 242.0°. Best body text is #000000 at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#51B0F2
RGB	rgb(81, 176, 242)
HSL	hsl(205, 86%, 63%)
HSV	hsv(205, 67%, 95%)
CMYK	cmyk(66.5%, 27.3%, 0%, 5.1%)
CIE-LAB	lab(68.90, -7.78, -41.12)
CIE-LCH	lch(68.90, 41.85, 259.29°)
OKLab	oklab(72.8% -0.0616 -0.1159)
OKLCH	oklch(72.8% 0.131 242)
XYZ	xyz(34.9396, 39.2071, 89.7135)
Luminance	0.3921 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B0F2 #F29351

analogous

#51F2E3 #51B0F2 #515FF2

triadic

#51B0F2 #F251B0 #B0F251

tetradic

#51B0F2 #E351F2 #F29351 #5FF251

square

#51B0F2 #E351F2 #F29351 #5FF251

split-complementary

#51B0F2 #F2515F #F2E351

monochromatic

#0E74BB #1896EE #51B0F2 #8ACAF6 #C3E4FB

Accessibility & contrast

On white

2.37

#51B0F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.84

#51B0F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B0F2

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B0F2	#FFFFFF	#000000	##000000
##51B0F2	1.00	2.37	8.84	8.84
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.84	21.00	1.00	1.00
##000000	8.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92B1F5

Deuteranopia (green-blind)

#7CA1F1

Tritanopia (blue-blind)

#00C0C7

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #51b0f2;
/* rgb */ color: rgb(81, 176, 242);
/* oklch */ color: oklch(72.8% 0.131 242.0);

Tailwind

colors: {
  custom: {
    50: '#92c7f6',
    500: '#51b0f2',
    950: '#000000',
  },
}

SCSS

$custom: #51b0f2;
$custom-light: #92c7f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51b0f2",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 242
  },
  "hsl": {
    "h": 204.596,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.72798,
    "c": 0.13126,
    "h": 242
  },
  "luminance": 0.39211
}

Semantic roles & 50–950 ramp

primary

#51B0F2

secondary

#ECCAB3

accent

#5F03E3

background

#F9FCFF

surface

#F2F8FE

border

#CCD1D6

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #51B0F2

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

Preview Lab → · Contrast checker → · Palette generator →