#243C82#243C82

#243C82 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.122 H 266.4°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#243C82
RGB	rgb(36, 60, 130)
HSL	hsl(225, 57%, 33%)
HSV	hsv(225, 72%, 51%)
CMYK	cmyk(72.3%, 53.8%, 0%, 49%)
CIE-LAB	lab(27.35, 16.27, -42.24)
CIE-LCH	lch(27.35, 45.27, 291.07°)
OKLab	oklab(37.96% -0.0077 -0.1214)
OKLCH	oklch(37.96% 0.122 266.4)
XYZ	xyz(6.3713, 5.2178, 21.7861)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C82 #826A24

analogous

#246B82 #243C82 #3B2482

triadic

#243C82 #82243C #3C8224

tetradic

#243C82 #82246B #826A24 #24823B

square

#243C82 #82246B #826A24 #24823B

split-complementary

#243C82 #823B24 #6B8224

monochromatic

#091022 #172652 #243C82 #3152B2 #5171CF

Accessibility & contrast

On white

10.28

#243C82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#243C82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C82

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C82	#FFFFFF	#000000	##FFFFFF
##243C82	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4584

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243c82;
/* rgb */ color: rgb(36, 60, 130);
/* oklch */ color: oklch(38.0% 0.122 266.4);

Tailwind

colors: {
  custom: {
    50: '#6c71a7',
    500: '#243c82',
    950: '#000000',
  },
}

SCSS

$custom: #243c82;
$custom-light: #6c71a7;
$custom-dark: #000000;

JSON

{
  "hex": "#243c82",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 130
  },
  "hsl": {
    "h": 224.681,
    "s": 56.627,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37957,
    "c": 0.12166,
    "h": 266.4
  },
  "luminance": 0.05218
}

Semantic roles & 50–950 ramp

primary

#243C82

secondary

#B3994F

accent

#B948E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243C82

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

Preview Lab → · Contrast checker → · Palette generator →