#51BFE6#51BFE6

#51BFE6 is a light, moderate cyan. Relative luminance 0.447; OKLCH L 75.7% C 0.114 H 224.8°. Best body text is #000000 at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#51BFE6
RGB	rgb(81, 191, 230)
HSL	hsl(196, 75%, 61%)
HSV	hsv(196, 65%, 90%)
CMYK	cmyk(64.8%, 17%, 0%, 9.8%)
CIE-LAB	lab(72.71, -19.59, -28.70)
CIE-LCH	lch(72.71, 34.75, 235.68°)
OKLab	oklab(75.67% -0.0806 -0.0801)
OKLCH	oklch(75.67% 0.114 224.8)
XYZ	xyz(36.3013, 44.7202, 81.5663)
Luminance	0.4472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFE6 #E67851

analogous

#51E6C2 #51BFE6 #5174E6

triadic

#51BFE6 #E651BF #BFE651

tetradic

#51BFE6 #C251E6 #E67851 #74E651

square

#51BFE6 #C251E6 #E67851 #74E651

split-complementary

#51BFE6 #E65174 #E6C251

monochromatic

#1880A5 #1FA9DA #51BFE6 #87D3EE #BCE6F5

Accessibility & contrast

On white

2.11

#51BFE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.94

#51BFE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFE6

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFE6	#FFFFFF	#000000	##000000
##51BFE6	1.00	2.11	9.94	9.94
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.94	21.00	1.00	1.00
##000000	9.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9BBE8

Deuteranopia (green-blind)

#94ACE6

Tritanopia (blue-blind)

#00CBCC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51bfe6;
/* rgb */ color: rgb(81, 191, 230);
/* oklch */ color: oklch(75.7% 0.114 224.8);

Tailwind

colors: {
  custom: {
    50: '#91d2ee',
    500: '#51bfe6',
    950: '#000000',
  },
}

SCSS

$custom: #51bfe6;
$custom-light: #91d2ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfe6",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 230
  },
  "hsl": {
    "h": 195.705,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.75667,
    "c": 0.11365,
    "h": 224.8
  },
  "luminance": 0.44724
}

Semantic roles & 50–950 ramp

primary

#51BFE6

secondary

#E5BCAD

accent

#430ED7

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51BFE6

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

Preview Lab → · Contrast checker → · Palette generator →