#243A73#243A73

#243A73 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.102 H 265.7°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#243A73
RGB	rgb(36, 58, 115)
HSL	hsl(223, 52%, 30%)
HSV	hsv(223, 69%, 45%)
CMYK	cmyk(68.7%, 49.6%, 0%, 54.9%)
CIE-LAB	lab(25.68, 11.78, -35.47)
CIE-LCH	lch(25.68, 37.38, 288.37°)
OKLab	oklab(36.34% -0.0076 -0.1015)
OKLCH	oklch(36.34% 0.102 265.7)
XYZ	xyz(5.3340, 4.6385, 16.8305)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A73 #735D24

analogous

#246273 #243A73 #362473

triadic

#243A73 #73243A #3A7324

tetradic

#243A73 #732462 #735D24 #247336

square

#243A73 #732462 #735D24 #247336

split-complementary

#243A73 #733624 #627324

monochromatic

#070C17 #152244 #243A73 #3352A2 #4B6DC7

Accessibility & contrast

On white

10.89

#243A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#243A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A73

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A73	#FFFFFF	#000000	##FFFFFF
##243A73	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4175

Deuteranopia (green-blind)

#0C3972

Tritanopia (blue-blind)

#004751

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243a73;
/* rgb */ color: rgb(36, 58, 115);
/* oklch */ color: oklch(36.3% 0.102 265.7);

Tailwind

colors: {
  custom: {
    50: '#686f9c',
    500: '#243a73',
    950: '#000000',
  },
}

SCSS

$custom: #243a73;
$custom-light: #686f9c;
$custom-dark: #000000;

JSON

{
  "hex": "#243a73",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 115
  },
  "hsl": {
    "h": 223.291,
    "s": 52.318,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36344,
    "c": 0.10184,
    "h": 265.7
  },
  "luminance": 0.04639
}

Semantic roles & 50–950 ramp

primary

#243A73

secondary

#A68D4D

accent

#B44CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243A73

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

Preview Lab → · Contrast checker → · Palette generator →