#51A3E1#51A3E1

#51A3E1 is a light, vivid cyan. Relative luminance 0.334; OKLCH L 69.0% C 0.122 H 243.8°. Best body text is #000000 at 7.68:1 contrast (WCAG AA passes).

Color values

HEX#51A3E1
RGBrgb(81, 163, 225)
HSLhsl(206, 71%, 60%)
HSVhsv(206, 64%, 88%)
CMYKcmyk(64%, 27.6%, 0%, 11.8%)
CIE-LABlab(64.46, -6.11, -38.74)
CIE-LCHlch(64.46, 39.22, 261.03°)
OKLaboklab(69.05% -0.0538 -0.1091)
OKLCHoklch(69.05% 0.122 243.8)
XYZxyz(30.0760, 33.3769, 76.0769)
Luminance0.3338 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A3E1 #E18F51
analogous
#51E1D7 #51A3E1 #515BE1
triadic
#51A3E1 #E151A3 #A3E151
tetradic
#51A3E1 #D751E1 #E18F51 #5BE151
square
#51A3E1 #D751E1 #E18F51 #5BE151
split-complementary
#51A3E1 #E1515B #E1D751
monochromatic
#1B659D #2486D1 #51A3E1 #85BFEA #B9DAF3

Accessibility & contrast

On white

2.74
#51A3E1 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.68
#51A3E1 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3E1
7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A3E1#FFFFFF#000000##000000
##51A3E11.002.747.687.68
#FFFFFF2.741.0021.0021.00
#0000007.6821.001.001.00
##0000007.6821.001.001.00

Color blindness preview

Protanopia (red-blind)
#87A4E4
Deuteranopia (green-blind)
#7496E0
Tritanopia (blue-blind)
#00B2B9
Achromatopsia (no color)
#9C9C9C

Design tokens & code

CSS
--color: #51a3e1;
/* rgb */ color: rgb(81, 163, 225);
/* oklch */ color: oklch(69.0% 0.122 243.8);
Tailwind
colors: {
  custom: {
    50: '#8fbeea',
    500: '#51a3e1',
    950: '#000000',
  },
}
SCSS
$custom: #51a3e1;
$custom-light: #8fbeea;
$custom-dark: #000000;
JSON
{
  "hex": "#51a3e1",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 225
  },
  "hsl": {
    "h": 205.833,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.69047,
    "c": 0.12168,
    "h": 243.8
  },
  "luminance": 0.3338
}

Semantic roles & 50–950 ramp

primary
#51A3E1
secondary
#E3C3AB
accent
#873AED
background
#F9FBFE
surface
#F2F6FD
border
#CCD0D5
text
#0E1216
muted
#7E8184

Preview Lab

Preview with #51A3E1

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

Preview Lab → · Contrast checker → · Palette generator →

#51A3E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva