#243F72#243F72

#243F72 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.094 H 261.9°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#243F72
RGB	rgb(36, 63, 114)
HSL	hsl(219, 52%, 29%)
HSV	hsv(219, 68%, 45%)
CMYK	cmyk(68.4%, 44.7%, 0%, 55.3%)
CIE-LAB	lab(27.14, 7.92, -32.50)
CIE-LCH	lch(27.14, 33.45, 283.69°)
OKLab	oklab(37.45% -0.0132 -0.0927)
OKLCH	oklch(37.45% 0.094 261.9)
XYZ	xyz(5.5413, 5.1445, 16.6173)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F72 #725724

analogous

#246672 #243F72 #302472

triadic

#243F72 #72243F #3F7224

tetradic

#243F72 #722466 #725724 #247230

square

#243F72 #722466 #725724 #247230

split-complementary

#243F72 #723024 #667224

monochromatic

#070D17 #152543 #243F72 #3359A1 #4A75C6

Accessibility & contrast

On white

10.35

#243F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F72

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F72	#FFFFFF	#000000	##FFFFFF
##243F72	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274474

Deuteranopia (green-blind)

#1B3D71

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243f72;
/* rgb */ color: rgb(36, 63, 114);
/* oklch */ color: oklch(37.4% 0.094 261.9);

Tailwind

colors: {
  custom: {
    50: '#68739b',
    500: '#243f72',
    950: '#000000',
  },
}

SCSS

$custom: #243f72;
$custom-light: #68739b;
$custom-dark: #000000;

JSON

{
  "hex": "#243f72",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 114
  },
  "hsl": {
    "h": 219.231,
    "s": 52,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37446,
    "c": 0.09365,
    "h": 261.9
  },
  "luminance": 0.05145
}

Semantic roles & 50–950 ramp

primary

#243F72

secondary

#A5864D

accent

#AA4CDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #243F72

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

Preview Lab → · Contrast checker → · Palette generator →