#243A9D#243A9D

#243A9D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.163 H 268.2°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#243A9D
RGB	rgb(36, 58, 157)
HSL	hsl(229, 63%, 38%)
HSV	hsv(229, 77%, 62%)
CMYK	cmyk(77.1%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(28.99, 28.12, -56.20)
CIE-LCH	lch(28.99, 62.84, 296.58°)
OKLab	oklab(39.88% -0.0051 -0.1625)
OKLCH	oklch(39.88% 0.163 268.2)
XYZ	xyz(8.3243, 5.8346, 32.5792)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A9D #9D8724

analogous

#24769D #243A9D #4B249D

triadic

#243A9D #9D243A #3A9D24

tetradic

#243A9D #9D2476 #9D8724 #249D4B

square

#243A9D #9D2476 #9D8724 #249D4B

split-complementary

#243A9D #9D4B24 #769D24

monochromatic

#0D1539 #19286B #243A9D #2F4CCF #6177DB

Accessibility & contrast

On white

9.69

#243A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#243A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A9D

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A9D	#FFFFFF	#000000	##FFFFFF
##243A9D	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243a9d;
/* rgb */ color: rgb(36, 58, 157);
/* oklch */ color: oklch(39.9% 0.163 268.2);

Tailwind

colors: {
  custom: {
    50: '#7270bb',
    500: '#243a9d',
    950: '#000000',
  },
}

SCSS

$custom: #243a9d;
$custom-light: #7270bb;
$custom-dark: #000000;

JSON

{
  "hex": "#243a9d",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 229.091,
    "s": 62.694,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39875,
    "c": 0.16254,
    "h": 268.2
  },
  "luminance": 0.05836
}

Semantic roles & 50–950 ramp

primary

#243A9D

secondary

#C0AE5D

accent

#C842E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243A9D

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

Preview Lab → · Contrast checker → · Palette generator →