#51AEDD#51AEDD

#51AEDD is a light, moderate cyan. Relative luminance 0.372; OKLCH L 71.4% C 0.111 H 233.4°. Best body text is #000000 at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#51AEDD
RGB	rgb(81, 174, 221)
HSL	hsl(200, 67%, 59%)
HSV	hsv(200, 63%, 87%)
CMYK	cmyk(63.3%, 21.3%, 0%, 13.3%)
CIE-LAB	lab(67.46, -13.43, -31.89)
CIE-LCH	lch(67.46, 34.60, 247.16°)
OKLab	oklab(71.36% -0.0664 -0.0893)
OKLCH	oklch(71.36% 0.111 233.4)
XYZ	xyz(31.5755, 37.2387, 73.9163)
Luminance	0.3724 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AEDD #DD8051

analogous

#51DDC6 #51AEDD #5168DD

triadic

#51AEDD #DD51AE #AEDD51

tetradic

#51AEDD #C651DD #DD8051 #68DD51

square

#51AEDD #C651DD #DD8051 #68DD51

split-complementary

#51AEDD #DD5168 #DDC651

monochromatic

#1D6E96 #2793C9 #51AEDD #84C6E7 #B7DEF1

Accessibility & contrast

On white

2.49

#51AEDD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.45

#51AEDD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEDD

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AEDD	#FFFFFF	#000000	##000000
##51AEDD	1.00	2.49	8.45	8.45
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.45	21.00	1.00	1.00
##000000	8.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97ACDF

Deuteranopia (green-blind)

#849EDC

Tritanopia (blue-blind)

#00BBBE

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #51aedd;
/* rgb */ color: rgb(81, 174, 221);
/* oklch */ color: oklch(71.4% 0.111 233.4);

Tailwind

colors: {
  custom: {
    50: '#8fc6e7',
    500: '#51aedd',
    950: '#000000',
  },
}

SCSS

$custom: #51aedd;
$custom-light: #8fc6e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51aedd",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 221
  },
  "hsl": {
    "h": 200.143,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.71363,
    "c": 0.11129,
    "h": 233.4
  },
  "luminance": 0.37242
}

Semantic roles & 50–950 ramp

primary

#51AEDD

secondary

#E0BCAA

accent

#783EEA

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AEDD

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

Preview Lab → · Contrast checker → · Palette generator →