#243C90#243C90

#243C90 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.142 H 267.3°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#243C90
RGB	rgb(36, 60, 144)
HSL	hsl(227, 60%, 35%)
HSV	hsv(227, 75%, 56%)
CMYK	cmyk(75%, 58.3%, 0%, 43.5%)
CIE-LAB	lab(28.43, 21.75, -49.16)
CIE-LCH	lch(28.43, 53.76, 293.87°)
OKLab	oklab(39.12% -0.0067 -0.1418)
OKLCH	oklch(39.12% 0.142 267.3)
XYZ	xyz(7.3757, 5.6196, 27.0761)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C90 #907824

analogous

#247290 #243C90 #422490

triadic

#243C90 #90243C #3C9024

tetradic

#243C90 #902472 #907824 #249042

square

#243C90 #902472 #907824 #249042

split-complementary

#243C90 #904224 #729024

monochromatic

#0C132E #18285F #243C90 #3050C1 #5975D5

Accessibility & contrast

On white

9.89

#243C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#243C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C90

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C90	#FFFFFF	#000000	##FFFFFF
##243C90	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004893

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243c90;
/* rgb */ color: rgb(36, 60, 144);
/* oklch */ color: oklch(39.1% 0.142 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f71b1',
    500: '#243c90',
    950: '#000000',
  },
}

SCSS

$custom: #243c90;
$custom-light: #6f71b1;
$custom-dark: #000000;

JSON

{
  "hex": "#243c90",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 144
  },
  "hsl": {
    "h": 226.667,
    "s": 60,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39117,
    "c": 0.14194,
    "h": 267.3
  },
  "luminance": 0.0562
}

Semantic roles & 50–950 ramp

primary

#243C90

secondary

#BAA456

accent

#C045E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #243C90

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

Preview Lab → · Contrast checker → · Palette generator →