#243F7A#243F7A

#243F7A is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.106 H 263.7°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#243F7A
RGB	rgb(36, 63, 122)
HSL	hsl(221, 54%, 31%)
HSV	hsv(221, 70%, 48%)
CMYK	cmyk(70.5%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(27.67, 11.05, -36.71)
CIE-LCH	lch(27.67, 38.34, 286.75°)
OKLab	oklab(38.02% -0.0117 -0.1051)
OKLCH	oklch(38.02% 0.106 263.7)
XYZ	xyz(6.0167, 5.3346, 19.1212)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F7A #7A5F24

analogous

#246A7A #243F7A #34247A

triadic

#243F7A #7A243F #3F7A24

tetradic

#243F7A #7A246A #7A5F24 #247A34

square

#243F7A #7A246A #7A5F24 #247A34

split-complementary

#243F7A #7A3424 #6A7A24

monochromatic

#080E1B #16274B #243F7A #3257A9 #4E75CB

Accessibility & contrast

On white

10.16

#243F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#243F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F7A

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F7A	#FFFFFF	#000000	##FFFFFF
##243F7A	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21467C

Deuteranopia (green-blind)

#0F3E79

Tritanopia (blue-blind)

#004D56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243f7a;
/* rgb */ color: rgb(36, 63, 122);
/* oklch */ color: oklch(38.0% 0.106 263.7);

Tailwind

colors: {
  custom: {
    50: '#6a73a1',
    500: '#243f7a',
    950: '#000000',
  },
}

SCSS

$custom: #243f7a;
$custom-light: #6a73a1;
$custom-dark: #000000;

JSON

{
  "hex": "#243f7a",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 221.163,
    "s": 54.43,
    "l": 30.98
  },
  "oklch": {
    "l": 0.3802,
    "c": 0.10575,
    "h": 263.7
  },
  "luminance": 0.05335
}

Semantic roles & 50–950 ramp

primary

#243F7A

secondary

#AC8F4D

accent

#AF4ADE

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #243F7A

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

Preview Lab → · Contrast checker → · Palette generator →