#243C80#243C80

#243C80 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.119 H 266.2°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#243C80
RGB	rgb(36, 60, 128)
HSL	hsl(224, 56%, 32%)
HSV	hsv(224, 72%, 50%)
CMYK	cmyk(71.9%, 53.1%, 0%, 49.8%)
CIE-LAB	lab(27.20, 15.49, -41.23)
CIE-LCH	lch(27.20, 44.04, 290.59°)
OKLab	oklab(37.8% -0.0079 -0.1184)
OKLCH	oklch(37.8% 0.119 266.2)
XYZ	xyz(6.2383, 5.1647, 21.0860)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C80 #806824

analogous

#246A80 #243C80 #3A2480

triadic

#243C80 #80243C #3C8024

tetradic

#243C80 #80246A #806824 #24803A

square

#243C80 #80246A #806824 #24803A

split-complementary

#243C80 #803A24 #6A8024

monochromatic

#090F20 #172650 #243C80 #3152B0 #5071CE

Accessibility & contrast

On white

10.33

#243C80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243C80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C80

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C80	#FFFFFF	#000000	##FFFFFF
##243C80	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124582

Deuteranopia (green-blind)

#003C7F

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243c80;
/* rgb */ color: rgb(36, 60, 128);
/* oklch */ color: oklch(37.8% 0.119 266.2);

Tailwind

colors: {
  custom: {
    50: '#6b71a5',
    500: '#243c80',
    950: '#000000',
  },
}

SCSS

$custom: #243c80;
$custom-light: #6b71a5;
$custom-dark: #000000;

JSON

{
  "hex": "#243c80",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 128
  },
  "hsl": {
    "h": 224.348,
    "s": 56.098,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37798,
    "c": 0.11871,
    "h": 266.2
  },
  "luminance": 0.05165
}

Semantic roles & 50–950 ramp

primary

#243C80

secondary

#B2984E

accent

#B848DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243C80

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

Preview Lab → · Contrast checker → · Palette generator →