#243D8E#243D8E

#243D8E is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.138 H 266.8°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#243D8E
RGB	rgb(36, 61, 142)
HSL	hsl(226, 60%, 35%)
HSV	hsv(226, 75%, 56%)
CMYK	cmyk(74.6%, 57%, 0%, 44.3%)
CIE-LAB	lab(28.55, 20.28, -47.74)
CIE-LCH	lch(28.55, 51.87, 293.02°)
OKLab	oklab(39.16% -0.0076 -0.1376)
OKLCH	oklch(39.16% 0.138 266.8)
XYZ	xyz(7.2771, 5.6648, 26.2958)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D8E #8E7524

analogous

#24728E #243D8E #40248E

triadic

#243D8E #8E243D #3D8E24

tetradic

#243D8E #8E2472 #8E7524 #248E40

square

#243D8E #8E2472 #8E7524 #248E40

split-complementary

#243D8E #8E4024 #728E24

monochromatic

#0B132C #18285D #243D8E #3052BF #5875D5

Accessibility & contrast

On white

9.84

#243D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#243D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D8E

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D8E	#FFFFFF	#000000	##FFFFFF
##243D8E	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003F8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243d8e;
/* rgb */ color: rgb(36, 61, 142);
/* oklch */ color: oklch(39.2% 0.138 266.8);

Tailwind

colors: {
  custom: {
    50: '#6e72b0',
    500: '#243d8e',
    950: '#000000',
  },
}

SCSS

$custom: #243d8e;
$custom-light: #6e72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#243d8e",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 225.849,
    "s": 59.551,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39156,
    "c": 0.13778,
    "h": 266.8
  },
  "luminance": 0.05666
}

Semantic roles & 50–950 ramp

primary

#243D8E

secondary

#B9A155

accent

#BE45E3

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243D8E

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

Preview Lab → · Contrast checker → · Palette generator →