#2541B0#2541B0

#2541B0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.179 H 267.2°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#2541B0
RGB	rgb(37, 65, 176)
HSL	hsl(228, 65%, 42%)
HSV	hsv(228, 79%, 69%)
CMYK	cmyk(79%, 63.1%, 0%, 31%)
CIE-LAB	lab(32.50, 30.78, -61.89)
CIE-LCH	lch(32.50, 69.12, 296.44°)
OKLab	oklab(42.99% -0.0089 -0.179)
OKLCH	oklch(42.99% 0.179 267.2)
XYZ	xyz(10.4870, 7.3073, 41.9236)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2541B0 #B09425

analogous

#2587B0 #2541B0 #4F25B0

triadic

#2541B0 #B02541 #41B025

tetradic

#2541B0 #B02587 #B09425 #25B04F

square

#2541B0 #B02587 #B09425 #25B04F

split-complementary

#2541B0 #B04F25 #87B025

monochromatic

#101C4B #1A2E7D #2541B0 #3C5BD6 #6F86E1

Accessibility & contrast

On white

8.53

#2541B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#2541B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2541B0

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2541B0	#FFFFFF	#000000	##FFFFFF
##2541B0	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2541b0;
/* rgb */ color: rgb(37, 65, 176);
/* oklch */ color: oklch(43.0% 0.179 267.2);

Tailwind

colors: {
  custom: {
    50: '#7775c9',
    500: '#2541b0',
    950: '#000000',
  },
}

SCSS

$custom: #2541b0;
$custom-light: #7775c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2541b0",
  "rgb": {
    "r": 37,
    "g": 65,
    "b": 176
  },
  "hsl": {
    "h": 227.914,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42994,
    "c": 0.17924,
    "h": 267.2
  },
  "luminance": 0.07308
}

Semantic roles & 50–950 ramp

primary

#2541B0

secondary

#C7B46A

accent

#C640E8

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2541B0

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

Preview Lab → · Contrast checker → · Palette generator →