#243A5D#243A5D

#243A5D is a dark, moderate blue. Relative luminance 0.042; OKLCH L 34.8% C 0.068 H 259.3°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#243A5D
RGB	rgb(36, 58, 93)
HSL	hsl(217, 44%, 25%)
HSV	hsv(217, 61%, 36%)
CMYK	cmyk(61.3%, 37.6%, 0%, 63.5%)
CIE-LAB	lab(24.29, 3.31, -23.51)
CIE-LCH	lch(24.29, 23.74, 278.02°)
OKLab	oklab(34.83% -0.0125 -0.0665)
OKLCH	oklch(34.83% 0.068 259.3)
XYZ	xyz(4.2157, 4.1911, 10.9406)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A5D #5D4724

analogous

#24565D #243A5D #2A245D

triadic

#243A5D #5D243A #3A5D24

tetradic

#243A5D #5D2456 #5D4724 #245D2A

square

#243A5D #5D2456 #5D4724 #245D2A

split-complementary

#243A5D #5D2A24 #565D24

monochromatic

#090E16 #131E31 #243A5D #355689 #4671B5

Accessibility & contrast

On white

11.42

#243A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#243A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A5D

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A5D	#FFFFFF	#000000	##FFFFFF
##243A5D	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3D5E

Deuteranopia (green-blind)

#24375C

Tritanopia (blue-blind)

#004247

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #243a5d;
/* rgb */ color: rgb(36, 58, 93);
/* oklch */ color: oklch(34.8% 0.068 259.3);

Tailwind

colors: {
  custom: {
    50: '#646f8b',
    500: '#243a5d',
    950: '#000000',
  },
}

SCSS

$custom: #243a5d;
$custom-light: #646f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#243a5d",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 93
  },
  "hsl": {
    "h": 216.842,
    "s": 44.186,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34826,
    "c": 0.06764,
    "h": 259.3
  },
  "luminance": 0.04191
}

Semantic roles & 50–950 ramp

primary

#243A5D

secondary

#91764C

accent

#A254D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243A5D

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

Preview Lab → · Contrast checker → · Palette generator →