#51C2DD#51C2DD

#51C2DD is a light, moderate cyan. Relative luminance 0.456; OKLCH L 76.0% C 0.108 H 216.3°. Best body text is #000000 at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#51C2DD
RGB	rgb(81, 194, 221)
HSL	hsl(192, 67%, 59%)
HSV	hsv(192, 63%, 87%)
CMYK	cmyk(63.3%, 12.2%, 0%, 13.3%)
CIE-LAB	lab(73.25, -23.85, -22.98)
CIE-LCH	lch(73.25, 33.12, 223.94°)
OKLab	oklab(76% -0.087 -0.0639)
OKLCH	oklch(76% 0.108 216.3)
XYZ	xyz(35.7309, 45.5496, 75.3015)
Luminance	0.4555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2DD #DD6C51

analogous

#51DDB2 #51C2DD #517CDD

triadic

#51C2DD #DD51C2 #C2DD51

tetradic

#51C2DD #B251DD #DD6C51 #7CDD51

square

#51C2DD #B251DD #DD6C51 #7CDD51

split-complementary

#51C2DD #DD517C #DDB251

monochromatic

#1D7F96 #27AAC9 #51C2DD #84D4E7 #B7E6F1

Accessibility & contrast

On white

2.08

#51C2DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.11

#51C2DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2DD

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2DD	#FFFFFF	#000000	##000000
##51C2DD	1.00	2.08	10.11	10.11
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.11	21.00	1.00	1.00
##000000	10.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BCDF

Deuteranopia (green-blind)

#9BADDD

Tritanopia (blue-blind)

#00CCCA

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #51c2dd;
/* rgb */ color: rgb(81, 194, 221);
/* oklch */ color: oklch(76.0% 0.108 216.3);

Tailwind

colors: {
  custom: {
    50: '#90d4e7',
    500: '#51c2dd',
    950: '#000000',
  },
}

SCSS

$custom: #51c2dd;
$custom-light: #90d4e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2dd",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 221
  },
  "hsl": {
    "h": 191.571,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.75997,
    "c": 0.10798,
    "h": 216.3
  },
  "luminance": 0.45553
}

Semantic roles & 50–950 ramp

primary

#51C2DD

secondary

#E0B4AA

accent

#5F3EEA

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C2DD

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

Preview Lab → · Contrast checker → · Palette generator →