#51AEE6#51AEE6

#51AEE6 is a light, moderate cyan. Relative luminance 0.377; OKLCH L 71.8% C 0.120 H 238.1°. Best body text is #000000 at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#51AEE6
RGB	rgb(81, 174, 230)
HSL	hsl(203, 75%, 61%)
HSV	hsv(203, 65%, 90%)
CMYK	cmyk(64.8%, 24.3%, 0%, 9.8%)
CIE-LAB	lab(67.82, -10.57, -36.25)
CIE-LCH	lch(67.82, 37.76, 253.75°)
OKLab	oklab(71.78% -0.0634 -0.1019)
OKLCH	oklch(71.78% 0.12 238.1)
XYZ	xyz(32.8068, 37.7312, 80.4015)
Luminance	0.3774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AEE6 #E68951

analogous

#51E6D3 #51AEE6 #5163E6

triadic

#51AEE6 #E651AE #AEE651

tetradic

#51AEE6 #D351E6 #E68951 #63E651

square

#51AEE6 #D351E6 #E68951 #63E651

split-complementary

#51AEE6 #E65163 #E6D351

monochromatic

#1870A5 #1F94DA #51AEE6 #87C7EE #BCE0F5

Accessibility & contrast

On white

2.46

#51AEE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.55

#51AEE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEE6

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AEE6	#FFFFFF	#000000	##000000
##51AEE6	1.00	2.46	8.55	8.55
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.55	21.00	1.00	1.00
##000000	8.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94AEE9

Deuteranopia (green-blind)

#809FE5

Tritanopia (blue-blind)

#00BCC1

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51aee6;
/* rgb */ color: rgb(81, 174, 230);
/* oklch */ color: oklch(71.8% 0.120 238.1);

Tailwind

colors: {
  custom: {
    50: '#90c6ee',
    500: '#51aee6',
    950: '#000000',
  },
}

SCSS

$custom: #51aee6;
$custom-light: #90c6ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51aee6",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 230
  },
  "hsl": {
    "h": 202.55,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.71775,
    "c": 0.11998,
    "h": 238.1
  },
  "luminance": 0.37735
}

Semantic roles & 50–950 ramp

primary

#51AEE6

secondary

#E5C2AD

accent

#5A0ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #51AEE6

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

Preview Lab → · Contrast checker → · Palette generator →