#255AB1#255AB1

#255AB1 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.2% C 0.150 H 259.9°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#255AB1
RGB	rgb(37, 90, 177)
HSL	hsl(217, 65%, 42%)
HSV	hsv(217, 79%, 69%)
CMYK	cmyk(79.1%, 49.2%, 0%, 30.6%)
CIE-LAB	lab(39.38, 14.58, -51.30)
CIE-LCH	lch(39.38, 53.33, 285.86°)
OKLab	oklab(48.21% -0.0262 -0.1475)
OKLCH	oklch(48.21% 0.15 259.9)
XYZ	xyz(12.3520, 10.8785, 43.0352)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255AB1 #B17C25

analogous

#25A0B1 #255AB1 #3625B1

triadic

#255AB1 #B1255A #5AB125

tetradic

#255AB1 #B125A0 #B17C25 #25B136

square

#255AB1 #B125A0 #B17C25 #25B136

split-complementary

#255AB1 #B13625 #A0B125

monochromatic

#10274C #1A407E #255AB1 #3D77D6 #6F9AE1

Accessibility & contrast

On white

6.61

#255AB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#255AB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255AB1

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255AB1	#FFFFFF	#000000	##FFFFFF
##255AB1	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2764B4

Deuteranopia (green-blind)

#0057AF

Tritanopia (blue-blind)

#006F7D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #255ab1;
/* rgb */ color: rgb(37, 90, 177);
/* oklch */ color: oklch(48.2% 0.150 259.9);

Tailwind

colors: {
  custom: {
    50: '#7588c9',
    500: '#255ab1',
    950: '#000000',
  },
}

SCSS

$custom: #255ab1;
$custom-light: #7588c9;
$custom-dark: #000000;

JSON

{
  "hex": "#255ab1",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 177
  },
  "hsl": {
    "h": 217.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.48206,
    "c": 0.14982,
    "h": 259.9
  },
  "luminance": 0.1088
}

Semantic roles & 50–950 ramp

primary

#255AB1

secondary

#C8A46A

accent

#A83FE8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255AB1

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

Preview Lab → · Contrast checker → · Palette generator →