#2443B1#2443B1

#2443B1 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.178 H 266.5°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#2443B1
RGB	rgb(36, 67, 177)
HSL	hsl(227, 66%, 42%)
HSV	hsv(227, 80%, 69%)
CMYK	cmyk(79.7%, 62.1%, 0%, 30.6%)
CIE-LAB	lab(33.05, 29.74, -61.57)
CIE-LCH	lch(33.05, 68.38, 295.78°)
OKLab	oklab(43.42% -0.0109 -0.1781)
OKLCH	oklch(43.42% 0.178 266.5)
XYZ	xyz(10.6677, 7.5625, 42.4839)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2443B1 #B19224

analogous

#2489B1 #2443B1 #4C24B1

triadic

#2443B1 #B12443 #43B124

tetradic

#2443B1 #B12489 #B19224 #24B14C

square

#2443B1 #B12489 #B19224 #24B14C

split-complementary

#2443B1 #B14C24 #89B124

monochromatic

#0F1C4B #1A307E #2443B1 #3B5DD7 #6E87E1

Accessibility & contrast

On white

8.36

#2443B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#2443B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2443B1

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2443B1	#FFFFFF	#000000	##FFFFFF
##2443B1	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B5

Deuteranopia (green-blind)

#0047AF

Tritanopia (blue-blind)

#006073

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2443b1;
/* rgb */ color: rgb(36, 67, 177);
/* oklch */ color: oklch(43.4% 0.178 266.5);

Tailwind

colors: {
  custom: {
    50: '#7776c9',
    500: '#2443b1',
    950: '#000000',
  },
}

SCSS

$custom: #2443b1;
$custom-light: #7776c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2443b1",
  "rgb": {
    "r": 36,
    "g": 67,
    "b": 177
  },
  "hsl": {
    "h": 226.809,
    "s": 66.197,
    "l": 41.765
  },
  "oklch": {
    "l": 0.43422,
    "c": 0.17842,
    "h": 266.5
  },
  "luminance": 0.07564
}

Semantic roles & 50–950 ramp

primary

#2443B1

secondary

#C8B369

accent

#C43FE9

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2443B1

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

Preview Lab → · Contrast checker → · Palette generator →