#2544B4#2544B4

#2544B4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.9% C 0.181 H 266.6°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#2544B4
RGB	rgb(37, 68, 180)
HSL	hsl(227, 66%, 43%)
HSV	hsv(227, 79%, 71%)
CMYK	cmyk(79.4%, 62.2%, 0%, 29.4%)
CIE-LAB	lab(33.61, 30.31, -62.44)
CIE-LCH	lch(33.61, 69.41, 295.90°)
OKLab	oklab(43.92% -0.0107 -0.1806)
OKLCH	oklch(43.92% 0.181 266.6)
XYZ	xyz(11.0654, 7.8216, 44.0977)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2544B4 #B49525

analogous

#258CB4 #2544B4 #4D25B4

triadic

#2544B4 #B42544 #44B425

tetradic

#2544B4 #B4258C #B49525 #25B44D

square

#2544B4 #B4258C #B49525 #25B44D

split-complementary

#2544B4 #B44D25 #8CB425

monochromatic

#101E4E #1B3181 #2544B4 #3F60D7 #718AE2

Accessibility & contrast

On white

8.19

#2544B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#2544B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2544B4

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2544B4	#FFFFFF	#000000	##FFFFFF
##2544B4	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2544b4;
/* rgb */ color: rgb(37, 68, 180);
/* oklch */ color: oklch(43.9% 0.181 266.6);

Tailwind

colors: {
  custom: {
    50: '#7877cb',
    500: '#2544b4',
    950: '#000000',
  },
}

SCSS

$custom: #2544b4;
$custom-light: #7877cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2544b4",
  "rgb": {
    "r": 37,
    "g": 68,
    "b": 180
  },
  "hsl": {
    "h": 226.993,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.43924,
    "c": 0.18094,
    "h": 266.6
  },
  "luminance": 0.07823
}

Semantic roles & 50–950 ramp

primary

#2544B4

secondary

#C9B56C

accent

#C43FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2544B4

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

Preview Lab → · Contrast checker → · Palette generator →