#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
RGB	rgb(37, 94, 164)
HSL	hsl(213, 63%, 39%)
HSV	hsv(213, 77%, 64%)
CMYK	cmyk(77.4%, 42.7%, 0%, 35.7%)
CIE-LAB	lab(39.71, 6.91, -43.07)
CIE-LCH	lch(39.71, 43.62, 279.11°)
OKLab	oklab(48.2% -0.032 -0.1232)
OKLCH	oklch(48.2% 0.127 255.4)
XYZ	xyz(11.4640, 11.0777, 36.6488)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	cyan

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
##255EA4	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

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 →