#2544B0#2544B0

#2544B0 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.6% C 0.176 H 266.5°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#2544B0
RGB	rgb(37, 68, 176)
HSL	hsl(227, 65%, 42%)
HSV	hsv(227, 79%, 69%)
CMYK	cmyk(79%, 61.4%, 0%, 31%)
CIE-LAB	lab(33.27, 28.80, -60.63)
CIE-LCH	lch(33.27, 67.12, 295.41°)
OKLab	oklab(43.56% -0.0107 -0.1753)
OKLCH	oklch(43.56% 0.176 266.5)
XYZ	xyz(10.6638, 7.6609, 41.9826)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2544B0 #B09125

analogous

#258AB0 #2544B0 #4C25B0

triadic

#2544B0 #B02544 #44B025

tetradic

#2544B0 #B0258A #B09125 #25B04C

square

#2544B0 #B0258A #B09125 #25B04C

split-complementary

#2544B0 #B04C25 #8AB025

monochromatic

#101D4B #1A307D #2544B0 #3C5ED6 #6F88E1

Accessibility & contrast

On white

8.29

#2544B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#2544B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2544B0

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2544B0	#FFFFFF	#000000	##FFFFFF
##2544B0	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B4

Deuteranopia (green-blind)

#0048AE

Tritanopia (blue-blind)

#006073

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2544b0;
/* rgb */ color: rgb(37, 68, 176);
/* oklch */ color: oklch(43.6% 0.176 266.5);

Tailwind

colors: {
  custom: {
    50: '#7777c9',
    500: '#2544b0',
    950: '#000000',
  },
}

SCSS

$custom: #2544b0;
$custom-light: #7777c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2544b0",
  "rgb": {
    "r": 37,
    "g": 68,
    "b": 176
  },
  "hsl": {
    "h": 226.619,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.43564,
    "c": 0.17563,
    "h": 266.5
  },
  "luminance": 0.07662
}

Semantic roles & 50–950 ramp

primary

#2544B0

secondary

#C7B26A

accent

#C340E8

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2544B0

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

Preview Lab → · Contrast checker → · Palette generator →