#2544B3#2544B3

#2544B3 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.8% C 0.180 H 266.6°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#2544B3
RGB	rgb(37, 68, 179)
HSL	hsl(227, 66%, 42%)
HSV	hsv(227, 79%, 70%)
CMYK	cmyk(79.3%, 62%, 0%, 29.8%)
CIE-LAB	lab(33.52, 29.94, -61.99)
CIE-LCH	lch(33.52, 68.84, 295.78°)
OKLab	oklab(43.83% -0.0107 -0.1793)
OKLCH	oklch(43.83% 0.18 266.6)
XYZ	xyz(10.9639, 7.7810, 43.5631)
Luminance	0.0778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2544B3 #B39425

analogous

#258BB3 #2544B3 #4D25B3

triadic

#2544B3 #B32544 #44B325

tetradic

#2544B3 #B3258B #B39425 #25B34D

square

#2544B3 #B3258B #B39425 #25B34D

split-complementary

#2544B3 #B34D25 #8BB325

monochromatic

#101D4E #1B3180 #2544B3 #3E5FD7 #7189E2

Accessibility & contrast

On white

8.21

#2544B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#2544B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2544B3

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2544B3	#FFFFFF	#000000	##FFFFFF
##2544B3	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2544b3;
/* rgb */ color: rgb(37, 68, 179);
/* oklch */ color: oklch(43.8% 0.180 266.6);

Tailwind

colors: {
  custom: {
    50: '#7777cb',
    500: '#2544b3',
    950: '#000000',
  },
}

SCSS

$custom: #2544b3;
$custom-light: #7777cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2544b3",
  "rgb": {
    "r": 37,
    "g": 68,
    "b": 179
  },
  "hsl": {
    "h": 226.901,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.43834,
    "c": 0.17961,
    "h": 266.6
  },
  "luminance": 0.07782
}

Semantic roles & 50–950 ramp

primary

#2544B3

secondary

#C8B46B

accent

#C43FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2544B3

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

Preview Lab → · Contrast checker → · Palette generator →