#243C91#243C91

#243C91 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.143 H 267.3°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#243C91
RGB	rgb(36, 60, 145)
HSL	hsl(227, 60%, 35%)
HSV	hsv(227, 75%, 57%)
CMYK	cmyk(75.2%, 58.6%, 0%, 43.1%)
CIE-LAB	lab(28.51, 22.14, -49.65)
CIE-LCH	lch(28.51, 54.36, 294.04°)
OKLab	oklab(39.2% -0.0066 -0.1432)
OKLCH	oklch(39.2% 0.143 267.3)
XYZ	xyz(7.4525, 5.6503, 27.4804)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C91 #917924

analogous

#247291 #243C91 #422491

triadic

#243C91 #91243C #3C9124

tetradic

#243C91 #912472 #917924 #249142

square

#243C91 #912472 #917924 #249142

split-complementary

#243C91 #914224 #729124

monochromatic

#0C132F #182860 #243C91 #3050C2 #5975D6

Accessibility & contrast

On white

9.86

#243C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#243C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C91

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C91	#FFFFFF	#000000	##FFFFFF
##243C91	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003E8F

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243c91;
/* rgb */ color: rgb(36, 60, 145);
/* oklch */ color: oklch(39.2% 0.143 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f71b2',
    500: '#243c91',
    950: '#000000',
  },
}

SCSS

$custom: #243c91;
$custom-light: #6f71b2;
$custom-dark: #000000;

JSON

{
  "hex": "#243c91",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 145
  },
  "hsl": {
    "h": 226.789,
    "s": 60.221,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39203,
    "c": 0.14335,
    "h": 267.3
  },
  "luminance": 0.05651
}

Semantic roles & 50–950 ramp

primary

#243C91

secondary

#BAA456

accent

#C044E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #243C91

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

Preview Lab → · Contrast checker → · Palette generator →