#2541B1#2541B1

#2541B1 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.181 H 267.2°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#2541B1
RGB	rgb(37, 65, 177)
HSL	hsl(228, 65%, 42%)
HSV	hsv(228, 79%, 69%)
CMYK	cmyk(79.1%, 63.3%, 0%, 30.6%)
CIE-LAB	lab(32.58, 31.15, -62.34)
CIE-LCH	lch(32.58, 69.69, 296.55°)
OKLab	oklab(43.09% -0.0089 -0.1803)
OKLCH	oklch(43.09% 0.181 267.2)
XYZ	xyz(10.5863, 7.3470, 42.4466)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2541B1 #B19525

analogous

#2587B1 #2541B1 #4F25B1

triadic

#2541B1 #B12541 #41B125

tetradic

#2541B1 #B12587 #B19525 #25B14F

square

#2541B1 #B12587 #B19525 #25B14F

split-complementary

#2541B1 #B14F25 #87B125

monochromatic

#101C4C #1A2E7E #2541B1 #3D5CD6 #6F86E1

Accessibility & contrast

On white

8.50

#2541B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#2541B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2541B1

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2541B1	#FFFFFF	#000000	##FFFFFF
##2541B1	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B5

Deuteranopia (green-blind)

#0046AF

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2541b1;
/* rgb */ color: rgb(37, 65, 177);
/* oklch */ color: oklch(43.1% 0.181 267.2);

Tailwind

colors: {
  custom: {
    50: '#7775c9',
    500: '#2541b1',
    950: '#000000',
  },
}

SCSS

$custom: #2541b1;
$custom-light: #7775c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2541b1",
  "rgb": {
    "r": 37,
    "g": 65,
    "b": 177
  },
  "hsl": {
    "h": 228,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.43085,
    "c": 0.18056,
    "h": 267.2
  },
  "luminance": 0.07348
}

Semantic roles & 50–950 ramp

primary

#2541B1

secondary

#C8B56A

accent

#C73FE8

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2541B1

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

Preview Lab → · Contrast checker → · Palette generator →