#255EA4#255EA4

#255EA4 is a mid, vivid cyan. Relative luminance 0.111; OKLCH L 48.2% C 0.127 H 255.4°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX#255EA4
RGBrgb(37, 94, 164)
HSLhsl(213, 63%, 39%)
HSVhsv(213, 77%, 64%)
CMYKcmyk(77.4%, 42.7%, 0%, 35.7%)
CIE-LABlab(39.71, 6.91, -43.07)
CIE-LCHlch(39.71, 43.62, 279.11°)
OKLaboklab(48.2% -0.032 -0.1232)
OKLCHoklch(48.2% 0.127 255.4)
XYZxyz(11.4640, 11.0777, 36.6488)
Luminance0.1108 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#255EA4 #A46B25
analogous
#259EA4 #255EA4 #2C25A4
triadic
#255EA4 #A4255E #5EA425
tetradic
#255EA4 #A4259E #A46B25 #25A42C
square
#255EA4 #A4259E #A46B25 #25A42C
split-complementary
#255EA4 #A42C25 #9EA425
monochromatic
#0E2540 #1A4172 #255EA4 #357BD1 #679CDD

Accessibility & contrast

On white

6.53
#255EA4 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.22
#255EA4 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255EA4
6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##255EA4#FFFFFF#000000##FFFFFF
##255EA41.006.533.226.53
#FFFFFF6.531.0021.001.00
#0000003.2221.001.0021.00
##FFFFFF6.531.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3C64A7
Deuteranopia (green-blind)
#2558A3
Tritanopia (blue-blind)
#006F79
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #255ea4;
/* rgb */ color: rgb(37, 94, 164);
/* oklch */ color: oklch(48.2% 0.127 255.4);
Tailwind
colors: {
  custom: {
    50: '#728bbf',
    500: '#255ea4',
    950: '#000000',
  },
}
SCSS
$custom: #255ea4;
$custom-light: #728bbf;
$custom-dark: #000000;
JSON
{
  "hex": "#255ea4",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 164
  },
  "hsl": {
    "h": 213.071,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.48197,
    "c": 0.1273,
    "h": 255.4
  },
  "luminance": 0.11079
}

Semantic roles & 50–950 ramp

primary
#255EA4
secondary
#C29762
accent
#9C42E6
background
#F7F8FB
surface
#EDF0F7
border
#C8CBD0
text
#090B12
muted
#7B7C81

Preview Lab

Preview with #255EA4

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

Preview Lab → · Contrast checker → · Palette generator →

#255EA4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva