#243F77#243F77

#243F77 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.101 H 263.1°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#243F77
RGB	rgb(36, 63, 119)
HSL	hsl(220, 54%, 30%)
HSV	hsv(220, 70%, 47%)
CMYK	cmyk(69.7%, 47.1%, 0%, 53.3%)
CIE-LAB	lab(27.47, 9.87, -35.14)
CIE-LCH	lch(27.47, 36.50, 285.69°)
OKLab	oklab(37.8% -0.0122 -0.1005)
OKLCH	oklch(37.8% 0.101 263.1)
XYZ	xyz(5.8337, 5.2614, 18.1573)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F77 #775C24

analogous

#246877 #243F77 #332477

triadic

#243F77 #77243F #3F7724

tetradic

#243F77 #772468 #775C24 #247733

square

#243F77 #772468 #775C24 #247733

split-complementary

#243F77 #773324 #687724

monochromatic

#080D19 #162648 #243F77 #3258A6 #4C75C9

Accessibility & contrast

On white

10.23

#243F77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#243F77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F77

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F77	#FFFFFF	#000000	##FFFFFF
##243F77	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234579

Deuteranopia (green-blind)

#143D76

Tritanopia (blue-blind)

#004C55

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243f77;
/* rgb */ color: rgb(36, 63, 119);
/* oklch */ color: oklch(37.8% 0.101 263.1);

Tailwind

colors: {
  custom: {
    50: '#69739f',
    500: '#243f77',
    950: '#000000',
  },
}

SCSS

$custom: #243f77;
$custom-light: #69739f;
$custom-dark: #000000;

JSON

{
  "hex": "#243f77",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 119
  },
  "hsl": {
    "h": 220.482,
    "s": 53.548,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37801,
    "c": 0.10122,
    "h": 263.1
  },
  "luminance": 0.05262
}

Semantic roles & 50–950 ramp

primary

#243F77

secondary

#AA8C4D

accent

#AD4BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #243F77

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

Preview Lab → · Contrast checker → · Palette generator →