#51BEF2#51BEF2

#51BEF2 is a light, vivid cyan. Relative luminance 0.450; OKLCH L 76.0% C 0.124 H 232.4°. Best body text is #000000 at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#51BEF2
RGB	rgb(81, 190, 242)
HSL	hsl(199, 86%, 63%)
HSV	hsv(199, 67%, 95%)
CMYK	cmyk(66.5%, 21.5%, 0%, 5.1%)
CIE-LAB	lab(72.88, -15.32, -34.92)
CIE-LCH	lch(72.88, 38.14, 246.31°)
OKLab	oklab(75.96% -0.0753 -0.0979)
OKLCH	oklch(75.96% 0.124 232.4)
XYZ	xyz(37.8275, 44.9830, 90.6762)
Luminance	0.4499 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BEF2 #F28551

analogous

#51F2D5 #51BEF2 #516DF2

triadic

#51BEF2 #F251BE #BEF251

tetradic

#51BEF2 #D551F2 #F28551 #6DF251

square

#51BEF2 #D551F2 #F28551 #6DF251

split-complementary

#51BEF2 #F2516D #F2D551

monochromatic

#0E83BB #18A9EE #51BEF2 #8AD3F6 #C3E9FB

Accessibility & contrast

On white

2.10

#51BEF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.00

#51BEF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BEF2

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BEF2	#FFFFFF	#000000	##000000
##51BEF2	1.00	2.10	10.00	10.00
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.00	21.00	1.00	1.00
##000000	10.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4BCF5

Deuteranopia (green-blind)

#8EACF1

Tritanopia (blue-blind)

#00CCCF

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51bef2;
/* rgb */ color: rgb(81, 190, 242);
/* oklch */ color: oklch(76.0% 0.124 232.4);

Tailwind

colors: {
  custom: {
    50: '#92d1f6',
    500: '#51bef2',
    950: '#000000',
  },
}

SCSS

$custom: #51bef2;
$custom-light: #92d1f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51bef2",
  "rgb": {
    "r": 81,
    "g": 190,
    "b": 242
  },
  "hsl": {
    "h": 199.379,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.75958,
    "c": 0.12357,
    "h": 232.4
  },
  "luminance": 0.44987
}

Semantic roles & 50–950 ramp

primary

#51BEF2

secondary

#ECC5B3

accent

#4B03E3

background

#F9FCFF

surface

#F2F9FE

border

#CCD2D6

text

#0E1417

muted

#7E8285

Preview Lab

Preview with #51BEF2

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

Preview Lab → · Contrast checker → · Palette generator →