#51C2DB#51C2DB

#51C2DB is a light, moderate cyan. Relative luminance 0.454; OKLCH L 75.9% C 0.107 H 214.8°. Best body text is #000000 at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#51C2DB
RGB	rgb(81, 194, 219)
HSL	hsl(191, 66%, 59%)
HSV	hsv(191, 63%, 86%)
CMYK	cmyk(63%, 11.4%, 0%, 14.1%)
CIE-LAB	lab(73.18, -24.44, -22.00)
CIE-LCH	lch(73.18, 32.89, 221.99°)
OKLab	oklab(75.92% -0.0878 -0.0611)
OKLCH	oklch(75.92% 0.107 214.8)
XYZ	xyz(35.4661, 45.4436, 73.9065)
Luminance	0.4545 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2DB #DB6A51

analogous

#51DBAF #51C2DB #517DDB

triadic

#51C2DB #DB51C2 #C2DB51

tetradic

#51C2DB #AF51DB #DB6A51 #7DDB51

square

#51C2DB #AF51DB #DB6A51 #7DDB51

split-complementary

#51C2DB #DB517D #DBAF51

monochromatic

#1E7E93 #29A9C6 #51C2DB #84D4E5 #B6E6F0

Accessibility & contrast

On white

2.08

#51C2DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.09

#51C2DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2DB

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2DB	#FFFFFF	#000000	##000000
##51C2DB	1.00	2.08	10.09	10.09
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.09	21.00	1.00	1.00
##000000	10.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BCDC

Deuteranopia (green-blind)

#9CADDB

Tritanopia (blue-blind)

#00CBCA

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #51c2db;
/* rgb */ color: rgb(81, 194, 219);
/* oklch */ color: oklch(75.9% 0.107 214.8);

Tailwind

colors: {
  custom: {
    50: '#90d4e6',
    500: '#51c2db',
    950: '#000000',
  },
}

SCSS

$custom: #51c2db;
$custom-light: #90d4e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2db",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 219
  },
  "hsl": {
    "h": 190.87,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.75918,
    "c": 0.10701,
    "h": 214.8
  },
  "luminance": 0.45447
}

Semantic roles & 50–950 ramp

primary

#51C2DB

secondary

#DFB3A9

accent

#5E3FE9

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C2DB

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

Preview Lab → · Contrast checker → · Palette generator →