#243A91#243A91

#243A91 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.8% C 0.146 H 268.0°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#243A91
RGB	rgb(36, 58, 145)
HSL	hsl(228, 60%, 35%)
HSV	hsv(228, 75%, 57%)
CMYK	cmyk(75.2%, 60%, 0%, 43.1%)
CIE-LAB	lab(27.97, 23.51, -50.54)
CIE-LCH	lch(27.97, 55.74, 294.95°)
OKLab	oklab(38.8% -0.0051 -0.1458)
OKLCH	oklch(38.8% 0.146 268)
XYZ	xyz(7.3497, 5.4447, 27.4462)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A91 #917B24

analogous

#247091 #243A91 #442491

triadic

#243A91 #91243A #3A9124

tetradic

#243A91 #912470 #917B24 #249144

square

#243A91 #912470 #917B24 #249144

split-complementary

#243A91 #914424 #709124

monochromatic

#0C132F #182660 #243A91 #304EC2 #5973D6

Accessibility & contrast

On white

10.05

#243A91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#243A91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A91

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A91	#FFFFFF	#000000	##FFFFFF
##243A91	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004794

Deuteranopia (green-blind)

#003D8F

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243a91;
/* rgb */ color: rgb(36, 58, 145);
/* oklch */ color: oklch(38.8% 0.146 268.0);

Tailwind

colors: {
  custom: {
    50: '#6f6fb2',
    500: '#243a91',
    950: '#000000',
  },
}

SCSS

$custom: #243a91;
$custom-light: #6f6fb2;
$custom-dark: #000000;

JSON

{
  "hex": "#243a91",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 145
  },
  "hsl": {
    "h": 227.89,
    "s": 60.221,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38795,
    "c": 0.14593,
    "h": 268
  },
  "luminance": 0.05446
}

Semantic roles & 50–950 ramp

primary

#243A91

secondary

#BAA656

accent

#C344E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #243A91

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

Preview Lab → · Contrast checker → · Palette generator →