#243F7C#243F7C

#243F7C is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.2% C 0.109 H 264.0°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#243F7C
RGB	rgb(36, 63, 124)
HSL	hsl(222, 55%, 31%)
HSV	hsv(222, 71%, 49%)
CMYK	cmyk(71%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.80, 11.83, -37.75)
CIE-LCH	lch(27.80, 39.56, 287.41°)
OKLab	oklab(38.17% -0.0114 -0.1081)
OKLCH	oklch(38.17% 0.109 264)
XYZ	xyz(6.1419, 5.3847, 19.7805)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F7C #7C6124

analogous

#246B7C #243F7C #35247C

triadic

#243F7C #7C243F #3F7C24

tetradic

#243F7C #7C246B #7C6124 #247C35

square

#243F7C #7C246B #7C6124 #247C35

split-complementary

#243F7C #7C3524 #6B7C24

monochromatic

#080F1D #16274D #243F7C #3257AB #4F75CC

Accessibility & contrast

On white

10.11

#243F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#243F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F7C

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F7C	#FFFFFF	#000000	##FFFFFF
##243F7C	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F467E

Deuteranopia (green-blind)

#0B3E7B

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243f7c;
/* rgb */ color: rgb(36, 63, 124);
/* oklch */ color: oklch(38.2% 0.109 264.0);

Tailwind

colors: {
  custom: {
    50: '#6a73a2',
    500: '#243f7c',
    950: '#000000',
  },
}

SCSS

$custom: #243f7c;
$custom-light: #6a73a2;
$custom-dark: #000000;

JSON

{
  "hex": "#243f7c",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 221.591,
    "s": 55,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38168,
    "c": 0.10874,
    "h": 264
  },
  "luminance": 0.05385
}

Semantic roles & 50–950 ramp

primary

#243F7C

secondary

#AE914D

accent

#B149DE

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #243F7C

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

Preview Lab → · Contrast checker → · Palette generator →