#255CB1#255CB1

#255CB1 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.6% C 0.147 H 259.1°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#255CB1
RGB	rgb(37, 92, 177)
HSL	hsl(216, 65%, 42%)
HSV	hsv(216, 79%, 69%)
CMYK	cmyk(79.1%, 48%, 0%, 30.6%)
CIE-LAB	lab(39.95, 13.26, -50.38)
CIE-LCH	lch(39.95, 52.09, 284.75°)
OKLab	oklab(48.65% -0.0278 -0.1447)
OKLCH	oklch(48.65% 0.147 259.1)
XYZ	xyz(12.5230, 11.2205, 43.0922)
Luminance	0.1122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255CB1 #B17A25

analogous

#25A2B1 #255CB1 #3425B1

triadic

#255CB1 #B1255C #5CB125

tetradic

#255CB1 #B125A2 #B17A25 #25B134

square

#255CB1 #B125A2 #B17A25 #25B134

split-complementary

#255CB1 #B13425 #A2B125

monochromatic

#10274C #1A427E #255CB1 #3D79D6 #6F9CE1

Accessibility & contrast

On white

6.47

#255CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#255CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255CB1

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255CB1	#FFFFFF	#000000	##FFFFFF
##255CB1	1.00	6.47	3.24	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C65B4

Deuteranopia (green-blind)

#0058AF

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #255cb1;
/* rgb */ color: rgb(37, 92, 177);
/* oklch */ color: oklch(48.6% 0.147 259.1);

Tailwind

colors: {
  custom: {
    50: '#7589c9',
    500: '#255cb1',
    950: '#000000',
  },
}

SCSS

$custom: #255cb1;
$custom-light: #7589c9;
$custom-dark: #000000;

JSON

{
  "hex": "#255cb1",
  "rgb": {
    "r": 37,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 216.429,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.48647,
    "c": 0.14739,
    "h": 259.1
  },
  "luminance": 0.11222
}

Semantic roles & 50–950 ramp

primary

#255CB1

secondary

#C8A36A

accent

#A63FE8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255CB1

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

Preview Lab → · Contrast checker → · Palette generator →