#51AADB#51AADB

#51AADB is a light, moderate cyan. Relative luminance 0.356; OKLCH L 70.4% C 0.111 H 235.5°. Best body text is #000000 at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#51AADB
RGB	rgb(81, 170, 219)
HSL	hsl(201, 66%, 59%)
HSV	hsv(201, 63%, 86%)
CMYK	cmyk(63%, 22.4%, 0%, 14.1%)
CIE-LAB	lab(66.22, -11.90, -32.70)
CIE-LCH	lch(66.22, 34.80, 250.00°)
OKLab	oklab(70.36% -0.063 -0.0917)
OKLCH	oklch(70.36% 0.111 235.5)
XYZ	xyz(30.5493, 35.6102, 72.2676)
Luminance	0.3561 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AADB #DB8251

analogous

#51DBC7 #51AADB #5165DB

triadic

#51AADB #DB51AA #AADB51

tetradic

#51AADB #C751DB #DB8251 #65DB51

square

#51AADB #C751DB #DB8251 #65DB51

split-complementary

#51AADB #DB5165 #DBC751

monochromatic

#1E6A93 #298EC6 #51AADB #84C3E5 #B6DCF0

Accessibility & contrast

On white

2.59

#51AADB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.12

#51AADB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AADB

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AADB	#FFFFFF	#000000	##000000
##51AADB	1.00	2.59	8.12	8.12
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.12	21.00	1.00	1.00
##000000	8.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A9DD

Deuteranopia (green-blind)

#809BDA

Tritanopia (blue-blind)

#00B7BA

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #51aadb;
/* rgb */ color: rgb(81, 170, 219);
/* oklch */ color: oklch(70.4% 0.111 235.5);

Tailwind

colors: {
  custom: {
    50: '#8fc3e6',
    500: '#51aadb',
    950: '#000000',
  },
}

SCSS

$custom: #51aadb;
$custom-light: #8fc3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51aadb",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 219
  },
  "hsl": {
    "h": 201.304,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.70355,
    "c": 0.1112,
    "h": 235.5
  },
  "luminance": 0.35613
}

Semantic roles & 50–950 ramp

primary

#51AADB

secondary

#DFBCA9

accent

#7B3FE9

background

#F9FBFE

surface

#F2F7FC

border

#CCD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #51AADB

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

Preview Lab → · Contrast checker → · Palette generator →