#255EAF#255EAF

#255EAF is a mid, vivid blue. Relative luminance 0.115; OKLCH L 48.9% C 0.142 H 257.9°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#255EAF
RGB	rgb(37, 94, 175)
HSL	hsl(215, 65%, 42%)
HSV	hsv(215, 79%, 69%)
CMYK	cmyk(78.9%, 46.3%, 0%, 31.4%)
CIE-LAB	lab(40.40, 11.18, -48.48)
CIE-LCH	lch(40.40, 49.75, 282.99°)
OKLab	oklab(48.95% -0.0298 -0.1391)
OKLCH	oklch(48.95% 0.142 257.9)
XYZ	xyz(12.5007, 11.4924, 42.1085)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255EAF #AF7625

analogous

#25A3AF #255EAF #3125AF

triadic

#255EAF #AF255E #5EAF25

tetradic

#255EAF #AF25A3 #AF7625 #25AF31

square

#255EAF #AF25A3 #AF7625 #25AF31

split-complementary

#255EAF #AF3125 #A3AF25

monochromatic

#10284A #1A437C #255EAF #3C7BD6 #6E9DE0

Accessibility & contrast

On white

6.37

#255EAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#255EAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255EAF

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255EAF	#FFFFFF	#000000	##FFFFFF
##255EAF	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3366B2

Deuteranopia (green-blind)

#1159AD

Tritanopia (blue-blind)

#00717E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #255eaf;
/* rgb */ color: rgb(37, 94, 175);
/* oklch */ color: oklch(48.9% 0.142 257.9);

Tailwind

colors: {
  custom: {
    50: '#758bc7',
    500: '#255eaf',
    950: '#000000',
  },
}

SCSS

$custom: #255eaf;
$custom-light: #758bc7;
$custom-dark: #000000;

JSON

{
  "hex": "#255eaf",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 175
  },
  "hsl": {
    "h": 215.217,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4895,
    "c": 0.14227,
    "h": 257.9
  },
  "luminance": 0.11494
}

Semantic roles & 50–950 ramp

primary

#255EAF

secondary

#C7A069

accent

#A340E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255EAF

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

Preview Lab → · Contrast checker → · Palette generator →