#51C6DE#51C6DE

#51C6DE is a light, moderate cyan. Relative luminance 0.474; OKLCH L 77.0% C 0.109 H 213.6°. Best body text is #000000 at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#51C6DE
RGB	rgb(81, 198, 222)
HSL	hsl(190, 68%, 59%)
HSV	hsv(190, 64%, 87%)
CMYK	cmyk(63.5%, 10.8%, 0%, 12.9%)
CIE-LAB	lab(74.45, -25.56, -21.70)
CIE-LCH	lch(74.45, 33.53, 220.34°)
OKLab	oklab(76.97% -0.0907 -0.0603)
OKLCH	oklch(76.97% 0.109 213.6)
XYZ	xyz(36.7668, 47.4075, 76.3060)
Luminance	0.4741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C6DE #DE6951

analogous

#51DEB0 #51C6DE #5180DE

triadic

#51C6DE #DE51C6 #C6DE51

tetradic

#51C6DE #B051DE #DE6951 #80DE51

square

#51C6DE #B051DE #DE6951 #80DE51

split-complementary

#51C6DE #DE5180 #DEB051

monochromatic

#1D8398 #27AFCB #51C6DE #84D7E8 #B8E8F2

Accessibility & contrast

On white

2.00

#51C6DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.48

#51C6DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C6DE

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C6DE	#FFFFFF	#000000	##000000
##51C6DE	1.00	2.00	10.48	10.48
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.48	21.00	1.00	1.00
##000000	10.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C0DF

Deuteranopia (green-blind)

#A0B1DE

Tritanopia (blue-blind)

#00CFCD

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #51c6de;
/* rgb */ color: rgb(81, 198, 222);
/* oklch */ color: oklch(77.0% 0.109 213.6);

Tailwind

colors: {
  custom: {
    50: '#91d7e8',
    500: '#51c6de',
    950: '#000000',
  },
}

SCSS

$custom: #51c6de;
$custom-light: #91d7e8;
$custom-dark: #000000;

JSON

{
  "hex": "#51c6de",
  "rgb": {
    "r": 81,
    "g": 198,
    "b": 222
  },
  "hsl": {
    "h": 190.213,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.7697,
    "c": 0.10895,
    "h": 213.6
  },
  "luminance": 0.47411
}

Semantic roles & 50–950 ramp

primary

#51C6DE

secondary

#E1B3AA

accent

#5A3DEB

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C6DE

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

Preview Lab → · Contrast checker → · Palette generator →