#2443B3#2443B3

#2443B3 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.181 H 266.5°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#2443B3
RGB	rgb(36, 67, 179)
HSL	hsl(227, 67%, 42%)
HSV	hsv(227, 80%, 70%)
CMYK	cmyk(79.9%, 62.6%, 0%, 29.8%)
CIE-LAB	lab(33.23, 30.50, -62.47)
CIE-LCH	lch(33.23, 69.52, 296.02°)
OKLab	oklab(43.6% -0.0109 -0.1807)
OKLCH	oklch(43.6% 0.181 266.5)
XYZ	xyz(10.8685, 7.6428, 43.5415)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2443B3 #B39424

analogous

#248BB3 #2443B3 #4D24B3

triadic

#2443B3 #B32443 #43B324

tetradic

#2443B3 #B3248B #B39424 #24B34D

square

#2443B3 #B3248B #B39424 #24B34D

split-complementary

#2443B3 #B34D24 #8BB324

monochromatic

#101D4D #1A3080 #2443B3 #3C5ED8 #6F88E2

Accessibility & contrast

On white

8.30

#2443B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#2443B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2443B3

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2443B3	#FFFFFF	#000000	##FFFFFF
##2443B3	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#006074

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2443b3;
/* rgb */ color: rgb(36, 67, 179);
/* oklch */ color: oklch(43.6% 0.181 266.5);

Tailwind

colors: {
  custom: {
    50: '#7776cb',
    500: '#2443b3',
    950: '#000000',
  },
}

SCSS

$custom: #2443b3;
$custom-light: #7776cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2443b3",
  "rgb": {
    "r": 36,
    "g": 67,
    "b": 179
  },
  "hsl": {
    "h": 226.993,
    "s": 66.512,
    "l": 42.157
  },
  "oklch": {
    "l": 0.43604,
    "c": 0.18107,
    "h": 266.5
  },
  "luminance": 0.07644
}

Semantic roles & 50–950 ramp

primary

#2443B3

secondary

#C9B46A

accent

#C43EE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2443B3

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

Preview Lab → · Contrast checker → · Palette generator →