#51BCF2#51BCF2

#51BCF2 is a light, vivid cyan. Relative luminance 0.441; OKLCH L 75.5% C 0.124 H 233.9°. Best body text is #000000 at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#51BCF2
RGB	rgb(81, 188, 242)
HSL	hsl(200, 86%, 63%)
HSV	hsv(200, 67%, 95%)
CMYK	cmyk(66.5%, 22.3%, 0%, 5.1%)
CIE-LAB	lab(72.31, -14.26, -35.81)
CIE-LCH	lch(72.31, 38.54, 248.28°)
OKLab	oklab(75.5% -0.0734 -0.1005)
OKLCH	oklch(75.5% 0.124 233.9)
XYZ	xyz(37.3973, 44.1226, 90.5328)
Luminance	0.4413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BCF2 #F28751

analogous

#51F2D7 #51BCF2 #516BF2

triadic

#51BCF2 #F251BC #BCF251

tetradic

#51BCF2 #D751F2 #F28751 #6BF251

square

#51BCF2 #D751F2 #F28751 #6BF251

split-complementary

#51BCF2 #F2516B #F2D751

monochromatic

#0E81BB #18A6EE #51BCF2 #8AD2F6 #C3E8FB

Accessibility & contrast

On white

2.14

#51BCF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.83

#51BCF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BCF2

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BCF2	#FFFFFF	#000000	##000000
##51BCF2	1.00	2.14	9.83	9.83
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.83	21.00	1.00	1.00
##000000	9.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2BAF5

Deuteranopia (green-blind)

#8CAAF1

Tritanopia (blue-blind)

#00CACE

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51bcf2;
/* rgb */ color: rgb(81, 188, 242);
/* oklch */ color: oklch(75.5% 0.124 233.9);

Tailwind

colors: {
  custom: {
    50: '#92d0f6',
    500: '#51bcf2',
    950: '#000000',
  },
}

SCSS

$custom: #51bcf2;
$custom-light: #92d0f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51bcf2",
  "rgb": {
    "r": 81,
    "g": 188,
    "b": 242
  },
  "hsl": {
    "h": 200.124,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.75504,
    "c": 0.12444,
    "h": 233.9
  },
  "luminance": 0.44127
}

Semantic roles & 50–950 ramp

primary

#51BCF2

secondary

#ECC6B3

accent

#4E03E3

background

#F9FCFF

surface

#F2F9FE

border

#CCD2D6

text

#0E1417

muted

#7E8285

Preview Lab

Preview with #51BCF2

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

Preview Lab → · Contrast checker → · Palette generator →