#255EA8#255EA8

#255EA8 is a mid, vivid cyan. Relative luminance 0.112; OKLCH L 48.5% C 0.133 H 256.4°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#255EA8
RGB	rgb(37, 94, 168)
HSL	hsl(214, 64%, 40%)
HSV	hsv(214, 78%, 66%)
CMYK	cmyk(78%, 44%, 0%, 34.1%)
CIE-LAB	lab(39.96, 8.46, -45.05)
CIE-LCH	lch(39.96, 45.84, 280.63°)
OKLab	oklab(48.47% -0.0312 -0.129)
OKLCH	oklch(48.47% 0.133 256.4)
XYZ	xyz(11.8309, 11.2245, 38.5812)
Luminance	0.1123 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255EA8 #A86F25

analogous

#259FA8 #255EA8 #2E25A8

triadic

#255EA8 #A8255E #5EA825

tetradic

#255EA8 #A8259F #A86F25 #25A82E

square

#255EA8 #A8259F #A86F25 #25A82E

split-complementary

#255EA8 #A82E25 #9FA825

monochromatic

#0F2644 #1A4276 #255EA8 #377BD3 #699CDE

Accessibility & contrast

On white

6.47

#255EA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#255EA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255EA8

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255EA8	#FFFFFF	#000000	##FFFFFF
##255EA8	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3965AB

Deuteranopia (green-blind)

#1F59A7

Tritanopia (blue-blind)

#00707B

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #255ea8;
/* rgb */ color: rgb(37, 94, 168);
/* oklch */ color: oklch(48.5% 0.133 256.4);

Tailwind

colors: {
  custom: {
    50: '#738bc2',
    500: '#255ea8',
    950: '#000000',
  },
}

SCSS

$custom: #255ea8;
$custom-light: #738bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#255ea8",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 168
  },
  "hsl": {
    "h": 213.893,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.48466,
    "c": 0.13274,
    "h": 256.4
  },
  "luminance": 0.11226
}

Semantic roles & 50–950 ramp

primary

#255EA8

secondary

#C49B65

accent

#9F41E7

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255EA8

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

Preview Lab → · Contrast checker → · Palette generator →