#255AB0#255AB0

#255AB0 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.1% C 0.148 H 259.8°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#255AB0
RGB	rgb(37, 90, 176)
HSL	hsl(217, 65%, 42%)
HSV	hsv(217, 79%, 69%)
CMYK	cmyk(79%, 48.9%, 0%, 31%)
CIE-LAB	lab(39.31, 14.19, -50.82)
CIE-LCH	lch(39.31, 52.76, 285.60°)
OKLab	oklab(48.13% -0.0264 -0.1461)
OKLCH	oklch(48.13% 0.148 259.8)
XYZ	xyz(12.2527, 10.8388, 42.5122)
Luminance	0.1084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255AB0 #B07B25

analogous

#25A0B0 #255AB0 #3525B0

triadic

#255AB0 #B0255A #5AB025

tetradic

#255AB0 #B025A0 #B07B25 #25B035

square

#255AB0 #B025A0 #B07B25 #25B035

split-complementary

#255AB0 #B03525 #A0B025

monochromatic

#10264B #1A407D #255AB0 #3C77D6 #6F9AE1

Accessibility & contrast

On white

6.63

#255AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#255AB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255AB0

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255AB0	#FFFFFF	#000000	##FFFFFF
##255AB0	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2863B3

Deuteranopia (green-blind)

#0057AE

Tritanopia (blue-blind)

#006F7C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #255ab0;
/* rgb */ color: rgb(37, 90, 176);
/* oklch */ color: oklch(48.1% 0.148 259.8);

Tailwind

colors: {
  custom: {
    50: '#7588c8',
    500: '#255ab0',
    950: '#000000',
  },
}

SCSS

$custom: #255ab0;
$custom-light: #7588c8;
$custom-dark: #000000;

JSON

{
  "hex": "#255ab0",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 176
  },
  "hsl": {
    "h": 217.122,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.48132,
    "c": 0.14846,
    "h": 259.8
  },
  "luminance": 0.1084
}

Semantic roles & 50–950 ramp

primary

#255AB0

secondary

#C7A46A

accent

#A840E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255AB0

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

Preview Lab → · Contrast checker → · Palette generator →