#243C7C#243C7C

#243C7C is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.113 H 265.7°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#243C7C
RGB	rgb(36, 60, 124)
HSL	hsl(224, 55%, 31%)
HSV	hsv(224, 71%, 49%)
CMYK	cmyk(71%, 51.6%, 0%, 51.4%)
CIE-LAB	lab(26.91, 13.91, -39.19)
CIE-LCH	lch(26.91, 41.59, 289.55°)
OKLab	oklab(37.49% -0.0084 -0.1124)
OKLCH	oklch(37.49% 0.113 265.7)
XYZ	xyz(5.9802, 5.0614, 19.7267)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C7C #7C6424

analogous

#24687C #243C7C #38247C

triadic

#243C7C #7C243C #3C7C24

tetradic

#243C7C #7C2468 #7C6424 #247C38

square

#243C7C #7C2468 #7C6424 #247C38

split-complementary

#243C7C #7C3824 #687C24

monochromatic

#080E1D #16254D #243C7C #3253AB #4F71CC

Accessibility & contrast

On white

10.44

#243C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#243C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C7C

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C7C	#FFFFFF	#000000	##FFFFFF
##243C7C	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18447E

Deuteranopia (green-blind)

#003C7B

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243c7c;
/* rgb */ color: rgb(36, 60, 124);
/* oklch */ color: oklch(37.5% 0.113 265.7);

Tailwind

colors: {
  custom: {
    50: '#6a71a2',
    500: '#243c7c',
    950: '#000000',
  },
}

SCSS

$custom: #243c7c;
$custom-light: #6a71a2;
$custom-dark: #000000;

JSON

{
  "hex": "#243c7c",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 223.636,
    "s": 55,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37485,
    "c": 0.11275,
    "h": 265.7
  },
  "luminance": 0.05062
}

Semantic roles & 50–950 ramp

primary

#243C7C

secondary

#AE944D

accent

#B649DE

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243C7C

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

Preview Lab → · Contrast checker → · Palette generator →