#51AED9#51AED9

#51AED9 is a light, moderate cyan. Relative luminance 0.370; OKLCH L 71.2% C 0.108 H 231.0°. Best body text is #000000 at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#51AED9
RGB	rgb(81, 174, 217)
HSL	hsl(199, 64%, 58%)
HSV	hsv(199, 63%, 85%)
CMYK	cmyk(62.7%, 19.8%, 0%, 14.9%)
CIE-LAB	lab(67.30, -14.69, -29.93)
CIE-LCH	lch(67.30, 33.34, 243.86°)
OKLab	oklab(71.19% -0.0678 -0.0837)
OKLCH	oklch(71.19% 0.108 231)
XYZ	xyz(31.0489, 37.0280, 71.1430)
Luminance	0.3703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AED9 #D97C51

analogous

#51D9C0 #51AED9 #516AD9

triadic

#51AED9 #D951AE #AED951

tetradic

#51AED9 #C051D9 #D97C51 #6AD951

square

#51AED9 #C051D9 #D97C51 #6AD951

split-complementary

#51AED9 #D9516A #D9C051

monochromatic

#1F6D90 #2A92C2 #51AED9 #83C5E4 #B5DDEF

Accessibility & contrast

On white

2.50

#51AED9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.41

#51AED9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AED9

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AED9	#FFFFFF	#000000	##000000
##51AED9	1.00	2.50	8.41	8.41
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.41	21.00	1.00	1.00
##000000	8.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98ACDB

Deuteranopia (green-blind)

#859ED8

Tritanopia (blue-blind)

#00BABC

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #51aed9;
/* rgb */ color: rgb(81, 174, 217);
/* oklch */ color: oklch(71.2% 0.108 231.0);

Tailwind

colors: {
  custom: {
    50: '#8fc6e5',
    500: '#51aed9',
    950: '#000000',
  },
}

SCSS

$custom: #51aed9;
$custom-light: #8fc6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51aed9",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 217
  },
  "hsl": {
    "h": 198.971,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.71186,
    "c": 0.10774,
    "h": 231
  },
  "luminance": 0.37031
}

Semantic roles & 50–950 ramp

primary

#51AED9

secondary

#DEB9A8

accent

#7541E7

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #51AED9

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

Preview Lab → · Contrast checker → · Palette generator →