#51AED5#51AED5

#51AED5 is a light, moderate cyan. Relative luminance 0.368; OKLCH L 71.0% C 0.104 H 228.4°. Best body text is #000000 at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#51AED5
RGB	rgb(81, 174, 213)
HSL	hsl(198, 61%, 58%)
HSV	hsv(198, 62%, 84%)
CMYK	cmyk(62%, 18.3%, 0%, 16.5%)
CIE-LAB	lab(67.14, -15.93, -27.97)
CIE-LCH	lch(67.14, 32.19, 240.33°)
OKLab	oklab(71.01% -0.0693 -0.0781)
OKLCH	oklch(71.01% 0.104 228.4)
XYZ	xyz(30.5349, 36.8224, 68.4361)
Luminance	0.3683 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AED5 #D57851

analogous

#51D5BA #51AED5 #516CD5

triadic

#51AED5 #D551AE #AED551

tetradic

#51AED5 #BA51D5 #D57851 #6CD551

square

#51AED5 #BA51D5 #D57851 #6CD551

split-complementary

#51AED5 #D5516C #D5BA51

monochromatic

#216B8A #2D92BC #51AED5 #82C5E1 #B4DCED

Accessibility & contrast

On white

2.51

#51AED5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.37

#51AED5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AED5

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AED5	#FFFFFF	#000000	##000000
##51AED5	1.00	2.51	8.37	8.37
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.37	21.00	1.00	1.00
##000000	8.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AABD7

Deuteranopia (green-blind)

#879DD5

Tritanopia (blue-blind)

#00B9BB

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51aed5;
/* rgb */ color: rgb(81, 174, 213);
/* oklch */ color: oklch(71.0% 0.104 228.4);

Tailwind

colors: {
  custom: {
    50: '#8ec6e2',
    500: '#51aed5',
    950: '#000000',
  },
}

SCSS

$custom: #51aed5;
$custom-light: #8ec6e2;
$custom-dark: #000000;

JSON

{
  "hex": "#51aed5",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 213
  },
  "hsl": {
    "h": 197.727,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.71012,
    "c": 0.10438,
    "h": 228.4
  },
  "luminance": 0.36826
}

Semantic roles & 50–950 ramp

primary

#51AED5

secondary

#DBB6A6

accent

#7344E4

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51AED5

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

Preview Lab → · Contrast checker → · Palette generator →