#243D6C#243D6C

#243D6C is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.6% C 0.087 H 261.9°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#243D6C
RGB	rgb(36, 61, 108)
HSL	hsl(219, 50%, 28%)
HSV	hsv(219, 67%, 42%)
CMYK	cmyk(66.7%, 43.5%, 0%, 57.6%)
CIE-LAB	lab(26.14, 6.97, -30.27)
CIE-LCH	lch(26.14, 31.06, 282.96°)
OKLab	oklab(36.55% -0.0123 -0.0862)
OKLCH	oklch(36.55% 0.087 261.9)
XYZ	xyz(5.1021, 4.7948, 14.8411)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D6C #6C5324

analogous

#24616C #243D6C #2F246C

triadic

#243D6C #6C243D #3D6C24

tetradic

#243D6C #6C2461 #6C5324 #246C2F

square

#243D6C #6C2461 #6C5324 #246C2F

split-complementary

#243D6C #6C2F24 #616C24

monochromatic

#080D17 #15233E #243D6C #33579A #4873C2

Accessibility & contrast

On white

10.72

#243D6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#243D6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D6C

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D6C	#FFFFFF	#000000	##FFFFFF
##243D6C	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28416E

Deuteranopia (green-blind)

#1D3B6B

Tritanopia (blue-blind)

#00484F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243d6c;
/* rgb */ color: rgb(36, 61, 108);
/* oklch */ color: oklch(36.6% 0.087 261.9);

Tailwind

colors: {
  custom: {
    50: '#677296',
    500: '#243d6c',
    950: '#000000',
  },
}

SCSS

$custom: #243d6c;
$custom-light: #677296;
$custom-dark: #000000;

JSON

{
  "hex": "#243d6c",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 108
  },
  "hsl": {
    "h": 219.167,
    "s": 50,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36551,
    "c": 0.08707,
    "h": 261.9
  },
  "luminance": 0.04795
}

Semantic roles & 50–950 ramp

primary

#243D6C

secondary

#9F834D

accent

#A94EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243D6C

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

Preview Lab → · Contrast checker → · Palette generator →