#243D84#243D84

#243D84 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.3% C 0.123 H 266.1°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#243D84
RGB	rgb(36, 61, 132)
HSL	hsl(224, 57%, 33%)
HSV	hsv(224, 73%, 52%)
CMYK	cmyk(72.7%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(27.79, 16.36, -42.78)
CIE-LCH	lch(27.79, 45.80, 290.93°)
OKLab	oklab(38.34% -0.0084 -0.123)
OKLCH	oklch(38.34% 0.123 266.1)
XYZ	xyz(6.5597, 5.3778, 22.5176)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D84 #846B24

analogous

#246D84 #243D84 #3B2484

triadic

#243D84 #84243D #3D8424

tetradic

#243D84 #84246D #846B24 #24843B

square

#243D84 #84246D #846B24 #24843B

split-complementary

#243D84 #843B24 #6D8424

monochromatic

#0A1124 #172754 #243D84 #3153B4 #5273D0

Accessibility & contrast

On white

10.12

#243D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#243D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D84

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D84	#FFFFFF	#000000	##FFFFFF
##243D84	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4687

Deuteranopia (green-blind)

#003D83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243d84;
/* rgb */ color: rgb(36, 61, 132);
/* oklch */ color: oklch(38.3% 0.123 266.1);

Tailwind

colors: {
  custom: {
    50: '#6c72a8',
    500: '#243d84',
    950: '#000000',
  },
}

SCSS

$custom: #243d84;
$custom-light: #6c72a8;
$custom-dark: #000000;

JSON

{
  "hex": "#243d84",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 224.375,
    "s": 57.143,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38336,
    "c": 0.12328,
    "h": 266.1
  },
  "luminance": 0.05378
}

Semantic roles & 50–950 ramp

primary

#243D84

secondary

#B49A50

accent

#B947E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243D84

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

Preview Lab → · Contrast checker → · Palette generator →