#243F6C#243F6C

#243F6C is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.0% C 0.085 H 260.1°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#243F6C
RGB	rgb(36, 63, 108)
HSL	hsl(218, 50%, 28%)
HSV	hsv(218, 67%, 42%)
CMYK	cmyk(66.7%, 41.7%, 0%, 57.6%)
CIE-LAB	lab(26.77, 5.59, -29.27)
CIE-LCH	lch(26.77, 29.80, 280.82°)
OKLab	oklab(37.04% -0.0146 -0.0832)
OKLCH	oklch(37.04% 0.085 260.1)
XYZ	xyz(5.2109, 5.0123, 14.8773)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F6C #6C5124

analogous

#24636C #243F6C #2D246C

triadic

#243F6C #6C243F #3F6C24

tetradic

#243F6C #6C2463 #6C5124 #246C2D

square

#243F6C #6C2463 #6C5124 #246C2D

split-complementary

#243F6C #6C2D24 #636C24

monochromatic

#080D17 #15243E #243F6C #335A9A #4876C2

Accessibility & contrast

On white

10.49

#243F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#243F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F6C

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F6C	#FFFFFF	#000000	##FFFFFF
##243F6C	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B436E

Deuteranopia (green-blind)

#213C6B

Tritanopia (blue-blind)

#004950

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243f6c;
/* rgb */ color: rgb(36, 63, 108);
/* oklch */ color: oklch(37.0% 0.085 260.1);

Tailwind

colors: {
  custom: {
    50: '#677396',
    500: '#243f6c',
    950: '#000000',
  },
}

SCSS

$custom: #243f6c;
$custom-light: #677396;
$custom-dark: #000000;

JSON

{
  "hex": "#243f6c",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 108
  },
  "hsl": {
    "h": 217.5,
    "s": 50,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37037,
    "c": 0.08452,
    "h": 260.1
  },
  "luminance": 0.05013
}

Semantic roles & 50–950 ramp

primary

#243F6C

secondary

#9F804D

accent

#A54EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #243F6C

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

Preview Lab → · Contrast checker → · Palette generator →