#51ADDB#51ADDB

#51ADDB is a light, moderate cyan. Relative luminance 0.368; OKLCH L 71.0% C 0.110 H 233.0°. Best body text is #000000 at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#51ADDB
RGB	rgb(81, 173, 219)
HSL	hsl(200, 66%, 59%)
HSV	hsv(200, 63%, 86%)
CMYK	cmyk(63%, 21%, 0%, 14.1%)
CIE-LAB	lab(67.09, -13.53, -31.36)
CIE-LCH	lch(67.09, 34.15, 246.67°)
OKLab	oklab(71.04% -0.0661 -0.0878)
OKLCH	oklch(71.04% 0.11 233)
XYZ	xyz(31.1181, 36.7478, 72.4572)
Luminance	0.3675 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ADDB #DB7F51

analogous

#51DBC4 #51ADDB #5168DB

triadic

#51ADDB #DB51AD #ADDB51

tetradic

#51ADDB #C451DB #DB7F51 #68DB51

square

#51ADDB #C451DB #DB7F51 #68DB51

split-complementary

#51ADDB #DB5168 #DBC451

monochromatic

#1E6C93 #2992C6 #51ADDB #84C5E5 #B6DDF0

Accessibility & contrast

On white

2.51

#51ADDB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.35

#51ADDB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ADDB

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ADDB	#FFFFFF	#000000	##000000
##51ADDB	1.00	2.51	8.35	8.35
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.35	21.00	1.00	1.00
##000000	8.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97ABDD

Deuteranopia (green-blind)

#839DDA

Tritanopia (blue-blind)

#00B9BC

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51addb;
/* rgb */ color: rgb(81, 173, 219);
/* oklch */ color: oklch(71.0% 0.110 233.0);

Tailwind

colors: {
  custom: {
    50: '#8fc5e6',
    500: '#51addb',
    950: '#000000',
  },
}

SCSS

$custom: #51addb;
$custom-light: #8fc5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51addb",
  "rgb": {
    "r": 81,
    "g": 173,
    "b": 219
  },
  "hsl": {
    "h": 200,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.71044,
    "c": 0.10988,
    "h": 233
  },
  "luminance": 0.36751
}

Semantic roles & 50–950 ramp

primary

#51ADDB

secondary

#DFBBA9

accent

#783FE9

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #51ADDB

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

Preview Lab → · Contrast checker → · Palette generator →