#243C9C#243C9C

#243C9C is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.159 H 267.7°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#243C9C
RGB	rgb(36, 60, 156)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 77%, 61%)
CMYK	cmyk(76.9%, 61.5%, 0%, 38.8%)
CIE-LAB	lab(29.43, 26.39, -54.88)
CIE-LCH	lch(29.43, 60.89, 295.68°)
OKLab	oklab(40.17% -0.0064 -0.1586)
OKLCH	oklch(40.17% 0.159 267.7)
XYZ	xyz(8.3421, 6.0062, 32.1657)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C9C #9C8424

analogous

#24789C #243C9C #48249C

triadic

#243C9C #9C243C #3C9C24

tetradic

#243C9C #9C2478 #9C8424 #249C48

square

#243C9C #9C2478 #9C8424 #249C48

split-complementary

#243C9C #9C4824 #789C24

monochromatic

#0D1639 #19296A #243C9C #2F4FCE #6079DA

Accessibility & contrast

On white

9.54

#243C9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#243C9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C9C

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C9C	#FFFFFF	#000000	##FFFFFF
##243C9C	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #243c9c;
/* rgb */ color: rgb(36, 60, 156);
/* oklch */ color: oklch(40.2% 0.159 267.7);

Tailwind

colors: {
  custom: {
    50: '#7271ba',
    500: '#243c9c',
    950: '#000000',
  },
}

SCSS

$custom: #243c9c;
$custom-light: #7271ba;
$custom-dark: #000000;

JSON

{
  "hex": "#243c9c",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 156
  },
  "hsl": {
    "h": 228,
    "s": 62.5,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40172,
    "c": 0.15869,
    "h": 267.7
  },
  "luminance": 0.06007
}

Semantic roles & 50–950 ramp

primary

#243C9C

secondary

#BFAC5C

accent

#C542E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243C9C

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

Preview Lab → · Contrast checker → · Palette generator →