#255CB0#255CB0

#255CB0 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.6% C 0.146 H 258.9°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#255CB0
RGB	rgb(37, 92, 176)
HSL	hsl(216, 65%, 42%)
HSV	hsv(216, 79%, 69%)
CMYK	cmyk(79%, 47.7%, 0%, 31%)
CIE-LAB	lab(39.88, 12.88, -49.89)
CIE-LCH	lch(39.88, 51.53, 284.47°)
OKLab	oklab(48.58% -0.028 -0.1433)
OKLCH	oklch(48.58% 0.146 258.9)
XYZ	xyz(12.4237, 11.1807, 42.5692)
Luminance	0.1118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255CB0 #B07925

analogous

#25A2B0 #255CB0 #3425B0

triadic

#255CB0 #B0255C #5CB025

tetradic

#255CB0 #B025A2 #B07925 #25B034

square

#255CB0 #B025A2 #B07925 #25B034

split-complementary

#255CB0 #B03425 #A2B025

monochromatic

#10274B #1A427D #255CB0 #3C79D6 #6F9CE1

Accessibility & contrast

On white

6.49

#255CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#255CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255CB0

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255CB0	#FFFFFF	#000000	##FFFFFF
##255CB0	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D65B3

Deuteranopia (green-blind)

#0058AE

Tritanopia (blue-blind)

#00707D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #255cb0;
/* rgb */ color: rgb(37, 92, 176);
/* oklch */ color: oklch(48.6% 0.146 258.9);

Tailwind

colors: {
  custom: {
    50: '#7589c8',
    500: '#255cb0',
    950: '#000000',
  },
}

SCSS

$custom: #255cb0;
$custom-light: #7589c8;
$custom-dark: #000000;

JSON

{
  "hex": "#255cb0",
  "rgb": {
    "r": 37,
    "g": 92,
    "b": 176
  },
  "hsl": {
    "h": 216.259,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.48575,
    "c": 0.14603,
    "h": 258.9
  },
  "luminance": 0.11182
}

Semantic roles & 50–950 ramp

primary

#255CB0

secondary

#C7A26A

accent

#A540E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255CB0

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

Preview Lab → · Contrast checker → · Palette generator →