#243B89#243B89

#243B89 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.133 H 267.3°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#243B89
RGB	rgb(36, 59, 137)
HSL	hsl(226, 58%, 34%)
HSV	hsv(226, 74%, 54%)
CMYK	cmyk(73.7%, 56.9%, 0%, 46.3%)
CIE-LAB	lab(27.60, 19.71, -46.20)
CIE-LCH	lch(27.60, 50.22, 293.10°)
OKLab	oklab(38.32% -0.0062 -0.1331)
OKLCH	oklch(38.32% 0.133 267.3)
XYZ	xyz(6.8053, 5.3084, 24.3280)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B89 #897224

analogous

#246E89 #243B89 #402489

triadic

#243B89 #89243B #3B8924

tetradic

#243B89 #89246E #897224 #248940

square

#243B89 #89246E #897224 #248940

split-complementary

#243B89 #894024 #6E8924

monochromatic

#0B1128 #172659 #243B89 #3150B9 #5572D2

Accessibility & contrast

On white

10.19

#243B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#243B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B89

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B89	#FFFFFF	#000000	##FFFFFF
##243B89	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468C

Deuteranopia (green-blind)

#003D87

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243b89;
/* rgb */ color: rgb(36, 59, 137);
/* oklch */ color: oklch(38.3% 0.133 267.3);

Tailwind

colors: {
  custom: {
    50: '#6d70ac',
    500: '#243b89',
    950: '#000000',
  },
}

SCSS

$custom: #243b89;
$custom-light: #6d70ac;
$custom-dark: #000000;

JSON

{
  "hex": "#243b89",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 137
  },
  "hsl": {
    "h": 226.337,
    "s": 58.382,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38315,
    "c": 0.13322,
    "h": 267.3
  },
  "luminance": 0.05309
}

Semantic roles & 50–950 ramp

primary

#243B89

secondary

#B7A052

accent

#BE46E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243B89

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

Preview Lab → · Contrast checker → · Palette generator →