#243A5E#243A5E

#243A5E is a dark, moderate blue. Relative luminance 0.042; OKLCH L 34.9% C 0.069 H 259.8°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#243A5E
RGB	rgb(36, 58, 94)
HSL	hsl(217, 45%, 25%)
HSV	hsv(217, 62%, 37%)
CMYK	cmyk(61.7%, 38.3%, 0%, 63.1%)
CIE-LAB	lab(24.35, 3.69, -24.07)
CIE-LCH	lch(24.35, 24.35, 278.71°)
OKLab	oklab(34.89% -0.0122 -0.0681)
OKLCH	oklch(34.89% 0.069 259.8)
XYZ	xyz(4.2603, 4.2090, 11.1754)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A5E #5E4824

analogous

#24575E #243A5E #2B245E

triadic

#243A5E #5E243A #3A5E24

tetradic

#243A5E #5E2457 #5E4824 #245E2B

square

#243A5E #5E2457 #5E4824 #245E2B

split-complementary

#243A5E #5E2B24 #575E24

monochromatic

#080E16 #131F32 #243A5E #35558A #4671B7

Accessibility & contrast

On white

11.40

#243A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#243A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A5E

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A5E	#FFFFFF	#000000	##FFFFFF
##243A5E	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3D5F

Deuteranopia (green-blind)

#24375D

Tritanopia (blue-blind)

#004247

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #243a5e;
/* rgb */ color: rgb(36, 58, 94);
/* oklch */ color: oklch(34.9% 0.069 259.8);

Tailwind

colors: {
  custom: {
    50: '#646f8c',
    500: '#243a5e',
    950: '#000000',
  },
}

SCSS

$custom: #243a5e;
$custom-light: #646f8c;
$custom-dark: #000000;

JSON

{
  "hex": "#243a5e",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 94
  },
  "hsl": {
    "h": 217.241,
    "s": 44.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.34889,
    "c": 0.06919,
    "h": 259.8
  },
  "luminance": 0.04209
}

Semantic roles & 50–950 ramp

primary

#243A5E

secondary

#92774C

accent

#A353D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243A5E

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

Preview Lab → · Contrast checker → · Palette generator →