#243583#243583

#243583 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.132 H 269.4°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#243583
RGB	rgb(36, 53, 131)
HSL	hsl(229, 57%, 33%)
HSV	hsv(229, 73%, 51%)
CMYK	cmyk(72.5%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(25.44, 21.52, -45.96)
CIE-LCH	lch(25.44, 50.75, 295.09°)
OKLab	oklab(36.55% -0.0014 -0.1325)
OKLCH	oklch(36.55% 0.132 269.4)
XYZ	xyz(6.0960, 4.5594, 22.0271)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243583 #837224

analogous

#246483 #243583 #422483

triadic

#243583 #832435 #358324

tetradic

#243583 #832464 #837224 #248342

square

#243583 #832464 #837224 #248342

split-complementary

#243583 #834224 #648324

monochromatic

#0A0E23 #172253 #243583 #3148B3 #5268CF

Accessibility & contrast

On white

10.98

#243583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243583

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243583	#FFFFFF	#000000	##FFFFFF
##243583	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004186

Deuteranopia (green-blind)

#003881

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243583;
/* rgb */ color: rgb(36, 53, 131);
/* oklch */ color: oklch(36.5% 0.132 269.4);

Tailwind

colors: {
  custom: {
    50: '#6c6ca8',
    500: '#243583',
    950: '#000000',
  },
}

SCSS

$custom: #243583;
$custom-light: #6c6ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#243583",
  "rgb": {
    "r": 36,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 229.263,
    "s": 56.886,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36547,
    "c": 0.13247,
    "h": 269.4
  },
  "luminance": 0.0456
}

Semantic roles & 50–950 ramp

primary

#243583

secondary

#B3A24F

accent

#C548E0

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #243583

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

Preview Lab → · Contrast checker → · Palette generator →