#243A89#243A89

#243A89 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.135 H 267.7°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#243A89
RGB	rgb(36, 58, 137)
HSL	hsl(227, 58%, 34%)
HSV	hsv(227, 74%, 54%)
CMYK	cmyk(73.7%, 57.7%, 0%, 46.3%)
CIE-LAB	lab(27.32, 20.40, -46.65)
CIE-LCH	lch(27.32, 50.92, 293.62°)
OKLab	oklab(38.1% -0.0054 -0.1344)
OKLCH	oklch(38.1% 0.135 267.7)
XYZ	xyz(6.7544, 5.2066, 24.3111)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A89 #897324

analogous

#246D89 #243A89 #412489

triadic

#243A89 #89243A #3A8924

tetradic

#243A89 #89246D #897324 #248941

square

#243A89 #89246D #897324 #248941

split-complementary

#243A89 #894124 #6D8924

monochromatic

#0B1128 #172559 #243A89 #314FB9 #5570D2

Accessibility & contrast

On white

10.29

#243A89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#243A89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A89

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A89	#FFFFFF	#000000	##FFFFFF
##243A89	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458C

Deuteranopia (green-blind)

#003C87

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243a89;
/* rgb */ color: rgb(36, 58, 137);
/* oklch */ color: oklch(38.1% 0.135 267.7);

Tailwind

colors: {
  custom: {
    50: '#6d6fac',
    500: '#243a89',
    950: '#000000',
  },
}

SCSS

$custom: #243a89;
$custom-light: #6d6fac;
$custom-dark: #000000;

JSON

{
  "hex": "#243a89",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 137
  },
  "hsl": {
    "h": 226.931,
    "s": 58.382,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38104,
    "c": 0.13453,
    "h": 267.7
  },
  "luminance": 0.05207
}

Semantic roles & 50–950 ramp

primary

#243A89

secondary

#B7A152

accent

#C046E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243A89

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

Preview Lab → · Contrast checker → · Palette generator →