#51C3DB#51C3DB

#51C3DB is a light, moderate cyan. Relative luminance 0.459; OKLCH L 76.2% C 0.107 H 214.0°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#51C3DB
RGB	rgb(81, 195, 219)
HSL	hsl(190, 66%, 59%)
HSV	hsv(190, 63%, 86%)
CMYK	cmyk(63%, 11%, 0%, 14.1%)
CIE-LAB	lab(73.47, -24.94, -21.56)
CIE-LCH	lch(73.47, 32.97, 220.84°)
OKLab	oklab(76.15% -0.0888 -0.0599)
OKLCH	oklch(76.15% 0.107 214)
XYZ	xyz(35.6894, 45.8902, 73.9809)
Luminance	0.4589 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3DB #DB6951

analogous

#51DBAE #51C3DB #517EDB

triadic

#51C3DB #DB51C3 #C3DB51

tetradic

#51C3DB #AE51DB #DB6951 #7EDB51

square

#51C3DB #AE51DB #DB6951 #7EDB51

split-complementary

#51C3DB #DB517E #DBAE51

monochromatic

#1E7F93 #29ABC6 #51C3DB #84D4E5 #B6E6F0

Accessibility & contrast

On white

2.06

#51C3DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.18

#51C3DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3DB

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3DB	#FFFFFF	#000000	##000000
##51C3DB	1.00	2.06	10.18	10.18
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.18	21.00	1.00	1.00
##000000	10.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1BDDC

Deuteranopia (green-blind)

#9DAEDB

Tritanopia (blue-blind)

#00CCCA

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #51c3db;
/* rgb */ color: rgb(81, 195, 219);
/* oklch */ color: oklch(76.2% 0.107 214.0);

Tailwind

colors: {
  custom: {
    50: '#90d5e6',
    500: '#51c3db',
    950: '#000000',
  },
}

SCSS

$custom: #51c3db;
$custom-light: #90d5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3db",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 219
  },
  "hsl": {
    "h": 190.435,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.76152,
    "c": 0.10714,
    "h": 214
  },
  "luminance": 0.45894
}

Semantic roles & 50–950 ramp

primary

#51C3DB

secondary

#DFB2A9

accent

#5D3FE9

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C3DB

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

Preview Lab → · Contrast checker → · Palette generator →