#243B91#243B91

#243B91 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.145 H 267.7°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#243B91
RGB	rgb(36, 59, 145)
HSL	hsl(227, 60%, 35%)
HSV	hsv(227, 75%, 57%)
CMYK	cmyk(75.2%, 59.3%, 0%, 43.1%)
CIE-LAB	lab(28.24, 22.83, -50.09)
CIE-LCH	lch(28.24, 55.05, 294.50°)
OKLab	oklab(39% -0.0059 -0.1445)
OKLCH	oklch(39% 0.145 267.7)
XYZ	xyz(7.4006, 5.5465, 27.4631)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B91 #917A24

analogous

#247291 #243B91 #432491

triadic

#243B91 #91243B #3B9124

tetradic

#243B91 #912472 #917A24 #249143

square

#243B91 #912472 #917A24 #249143

split-complementary

#243B91 #914324 #729124

monochromatic

#0C132F #182760 #243B91 #304FC2 #5974D6

Accessibility & contrast

On white

9.96

#243B91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#243B91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B91

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B91	#FFFFFF	#000000	##FFFFFF
##243B91	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003E8F

Tritanopia (blue-blind)

#005060

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243b91;
/* rgb */ color: rgb(36, 59, 145);
/* oklch */ color: oklch(39.0% 0.145 267.7);

Tailwind

colors: {
  custom: {
    50: '#6f70b2',
    500: '#243b91',
    950: '#000000',
  },
}

SCSS

$custom: #243b91;
$custom-light: #6f70b2;
$custom-dark: #000000;

JSON

{
  "hex": "#243b91",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 145
  },
  "hsl": {
    "h": 227.339,
    "s": 60.221,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38998,
    "c": 0.14464,
    "h": 267.7
  },
  "luminance": 0.05547
}

Semantic roles & 50–950 ramp

primary

#243B91

secondary

#BAA556

accent

#C244E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #243B91

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

Preview Lab → · Contrast checker → · Palette generator →