#51ABD8#51ABD8

#51ABD8 is a light, moderate cyan. Relative luminance 0.358; OKLCH L 70.5% C 0.108 H 233.0°. Best body text is #000000 at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#51ABD8
RGB	rgb(81, 171, 216)
HSL	hsl(200, 63%, 58%)
HSV	hsv(200, 63%, 85%)
CMYK	cmyk(62.5%, 20.8%, 0%, 15.3%)
CIE-LAB	lab(66.39, -13.39, -30.78)
CIE-LCH	lch(66.39, 33.57, 246.49°)
OKLab	oklab(70.45% -0.065 -0.0862)
OKLCH	oklch(70.45% 0.108 233)
XYZ	xyz(30.3461, 35.8300, 70.2690)
Luminance	0.3583 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ABD8 #D87E51

analogous

#51D8C1 #51ABD8 #5167D8

triadic

#51ABD8 #D851AB #ABD851

tetradic

#51ABD8 #C151D8 #D87E51 #67D851

square

#51ABD8 #C151D8 #D87E51 #67D851

split-complementary

#51ABD8 #D85167 #D8C151

monochromatic

#206A8F #2B8FC1 #51ABD8 #83C3E3 #B5DBEE

Accessibility & contrast

On white

2.57

#51ABD8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.17

#51ABD8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ABD8

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ABD8	#FFFFFF	#000000	##000000
##51ABD8	1.00	2.57	8.17	8.17
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.17	21.00	1.00	1.00
##000000	8.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A9DA

Deuteranopia (green-blind)

#829BD7

Tritanopia (blue-blind)

#00B7BA

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #51abd8;
/* rgb */ color: rgb(81, 171, 216);
/* oklch */ color: oklch(70.5% 0.108 233.0);

Tailwind

colors: {
  custom: {
    50: '#8ec4e4',
    500: '#51abd8',
    950: '#000000',
  },
}

SCSS

$custom: #51abd8;
$custom-light: #8ec4e4;
$custom-dark: #000000;

JSON

{
  "hex": "#51abd8",
  "rgb": {
    "r": 81,
    "g": 171,
    "b": 216
  },
  "hsl": {
    "h": 200,
    "s": 63.38,
    "l": 58.235
  },
  "oklch": {
    "l": 0.7045,
    "c": 0.10795,
    "h": 233
  },
  "luminance": 0.35833
}

Semantic roles & 50–950 ramp

primary

#51ABD8

secondary

#DDB9A8

accent

#7841E6

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51ABD8

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

Preview Lab → · Contrast checker → · Palette generator →