#2541B4#2541B4

#2541B4 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.185 H 267.2°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#2541B4
RGB	rgb(37, 65, 180)
HSL	hsl(228, 66%, 43%)
HSV	hsv(228, 79%, 71%)
CMYK	cmyk(79.4%, 63.9%, 0%, 29.4%)
CIE-LAB	lab(32.85, 32.28, -63.68)
CIE-LCH	lch(32.85, 71.40, 296.88°)
OKLab	oklab(43.36% -0.009 -0.1843)
OKLCH	oklch(43.36% 0.185 267.2)
XYZ	xyz(10.8886, 7.4679, 44.0388)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2541B4 #B49825

analogous

#2588B4 #2541B4 #5125B4

triadic

#2541B4 #B42541 #41B425

tetradic

#2541B4 #B42588 #B49825 #25B451

square

#2541B4 #B42588 #B49825 #25B451

split-complementary

#2541B4 #B45125 #88B425

monochromatic

#101C4E #1B2F81 #2541B4 #3F5DD7 #7188E2

Accessibility & contrast

On white

8.42

#2541B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#2541B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2541B4

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2541B4	#FFFFFF	#000000	##FFFFFF
##2541B4	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2541b4;
/* rgb */ color: rgb(37, 65, 180);
/* oklch */ color: oklch(43.4% 0.185 267.2);

Tailwind

colors: {
  custom: {
    50: '#7875cb',
    500: '#2541b4',
    950: '#000000',
  },
}

SCSS

$custom: #2541b4;
$custom-light: #7875cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2541b4",
  "rgb": {
    "r": 37,
    "g": 65,
    "b": 180
  },
  "hsl": {
    "h": 228.252,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.43363,
    "c": 0.18451,
    "h": 267.2
  },
  "luminance": 0.07469
}

Semantic roles & 50–950 ramp

primary

#2541B4

secondary

#C9B76C

accent

#C83FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2541B4

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

Preview Lab → · Contrast checker → · Palette generator →