#51AAE1#51AAE1

#51AAE1 is a light, moderate cyan. Relative luminance 0.359; OKLCH L 70.6% C 0.117 H 238.7°. Best body text is #000000 at 8.19:1 contrast (WCAG AA passes).

Color values

HEX#51AAE1
RGBrgb(81, 170, 225)
HSLhsl(203, 71%, 60%)
HSVhsv(203, 64%, 88%)
CMYKcmyk(64%, 24.4%, 0%, 11.8%)
CIE-LABlab(66.47, -9.99, -35.62)
CIE-LCHlch(66.47, 36.99, 254.34°)
OKLaboklab(70.63% -0.0609 -0.1001)
OKLCHoklch(70.63% 0.117 238.7)
XYZxyz(31.3535, 35.9318, 76.5027)
Luminance0.3594 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51AAE1 #E18851
analogous
#51E1D0 #51AAE1 #5162E1
triadic
#51AAE1 #E151AA #AAE151
tetradic
#51AAE1 #D051E1 #E18851 #62E151
square
#51AAE1 #D051E1 #E18851 #62E151
split-complementary
#51AAE1 #E15162 #E1D051
monochromatic
#1B6B9D #248FD1 #51AAE1 #85C3EA #B9DDF3

Accessibility & contrast

On white

2.57
#51AAE1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.19
#51AAE1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AAE1
8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51AAE1#FFFFFF#000000##000000
##51AAE11.002.578.198.19
#FFFFFF2.571.0021.0021.00
#0000008.1921.001.001.00
##0000008.1921.001.001.00

Color blindness preview

Protanopia (red-blind)
#91AAE4
Deuteranopia (green-blind)
#7D9BE0
Tritanopia (blue-blind)
#00B8BD
Achromatopsia (no color)
#A2A2A2

Design tokens & code

CSS
--color: #51aae1;
/* rgb */ color: rgb(81, 170, 225);
/* oklch */ color: oklch(70.6% 0.117 238.7);
Tailwind
colors: {
  custom: {
    50: '#8fc3ea',
    500: '#51aae1',
    950: '#000000',
  },
}
SCSS
$custom: #51aae1;
$custom-light: #8fc3ea;
$custom-dark: #000000;
JSON
{
  "hex": "#51aae1",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 225
  },
  "hsl": {
    "h": 202.917,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.70633,
    "c": 0.11716,
    "h": 238.7
  },
  "luminance": 0.35935
}

Semantic roles & 50–950 ramp

primary
#51AAE1
secondary
#E3C0AB
accent
#7F3AED
background
#F9FBFE
surface
#F2F7FD
border
#CCD0D5
text
#0E1216
muted
#7E8184

Preview Lab

Preview with #51AAE1

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

Preview Lab → · Contrast checker → · Palette generator →

#51AAE1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva