#51AEE3#51AEE3

#51AEE3 is a light, moderate cyan. Relative luminance 0.376; OKLCH L 71.6% C 0.117 H 236.6°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX#51AEE3
RGBrgb(81, 174, 227)
HSLhsl(202, 72%, 60%)
HSVhsv(202, 64%, 89%)
CMYKcmyk(64.3%, 23.3%, 0%, 11%)
CIE-LABlab(67.70, -11.53, -34.80)
CIE-LCHlch(67.70, 36.66, 251.67°)
OKLaboklab(71.64% -0.0644 -0.0977)
OKLCHoklch(71.64% 0.117 236.6)
XYZxyz(32.3892, 37.5641, 78.2018)
Luminance0.3757 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51AEE3 #E38651
analogous
#51E3CF #51AEE3 #5165E3
triadic
#51AEE3 #E351AE #AEE351
tetradic
#51AEE3 #CF51E3 #E38651 #65E351
square
#51AEE3 #CF51E3 #E38651 #65E351
split-complementary
#51AEE3 #E35165 #E3CF51
monochromatic
#1A6FA0 #2294D5 #51AEE3 #86C7EB #BADFF4

Accessibility & contrast

On white

2.47
#51AEE3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.51
#51AEE3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AEE3
8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51AEE3#FFFFFF#000000##000000
##51AEE31.002.478.518.51
#FFFFFF2.471.0021.0021.00
#0000008.5121.001.001.00
##0000008.5121.001.001.00

Color blindness preview

Protanopia (red-blind)
#95ADE5
Deuteranopia (green-blind)
#819EE2
Tritanopia (blue-blind)
#00BCC0
Achromatopsia (no color)
#A5A5A5

Design tokens & code

CSS
--color: #51aee3;
/* rgb */ color: rgb(81, 174, 227);
/* oklch */ color: oklch(71.6% 0.117 236.6);
Tailwind
colors: {
  custom: {
    50: '#90c6ec',
    500: '#51aee3',
    950: '#000000',
  },
}
SCSS
$custom: #51aee3;
$custom-light: #90c6ec;
$custom-dark: #000000;
JSON
{
  "hex": "#51aee3",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 227
  },
  "hsl": {
    "h": 201.781,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.71636,
    "c": 0.11699,
    "h": 236.6
  },
  "luminance": 0.37567
}

Semantic roles & 50–950 ramp

primary
#51AEE3
secondary
#E4C0AC
accent
#5811D4
background
#F9FCFE
surface
#F2F8FD
border
#CCD1D5
text
#0E1316
muted
#7E8284

Preview Lab

Preview with #51AEE3

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

Preview Lab → · Contrast checker → · Palette generator →

#51AEE3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva