#243C6C#243C6C

#243C6C is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.088 H 262.8°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#243C6C
RGB	rgb(36, 60, 108)
HSL	hsl(220, 50%, 28%)
HSV	hsv(220, 67%, 42%)
CMYK	cmyk(66.7%, 44.4%, 0%, 57.6%)
CIE-LAB	lab(25.83, 7.66, -30.77)
CIE-LCH	lch(25.83, 31.71, 283.98°)
OKLab	oklab(36.31% -0.0111 -0.0877)
OKLCH	oklch(36.31% 0.088 262.8)
XYZ	xyz(5.0492, 4.6890, 14.8234)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C6C #6C5424

analogous

#24606C #243C6C #30246C

triadic

#243C6C #6C243C #3C6C24

tetradic

#243C6C #6C2460 #6C5424 #246C30

square

#243C6C #6C2460 #6C5424 #246C30

split-complementary

#243C6C #6C3024 #606C24

monochromatic

#080D17 #15223E #243C6C #33559A #4871C2

Accessibility & contrast

On white

10.84

#243C6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#243C6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C6C

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C6C	#FFFFFF	#000000	##FFFFFF
##243C6C	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26416E

Deuteranopia (green-blind)

#1B3A6B

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243c6c;
/* rgb */ color: rgb(36, 60, 108);
/* oklch */ color: oklch(36.3% 0.088 262.8);

Tailwind

colors: {
  custom: {
    50: '#677196',
    500: '#243c6c',
    950: '#000000',
  },
}

SCSS

$custom: #243c6c;
$custom-light: #677196;
$custom-dark: #000000;

JSON

{
  "hex": "#243c6c",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 108
  },
  "hsl": {
    "h": 220,
    "s": 50,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3631,
    "c": 0.08838,
    "h": 262.8
  },
  "luminance": 0.04689
}

Semantic roles & 50–950 ramp

primary

#243C6C

secondary

#9F844D

accent

#AB4EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243C6C

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

Preview Lab → · Contrast checker → · Palette generator →