#243D89#243D89

#243D89 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.131 H 266.5°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#243D89
RGB	rgb(36, 61, 137)
HSL	hsl(225, 58%, 34%)
HSV	hsv(225, 74%, 54%)
CMYK	cmyk(73.7%, 55.5%, 0%, 46.3%)
CIE-LAB	lab(28.16, 18.33, -45.28)
CIE-LCH	lch(28.16, 48.85, 292.04°)
OKLab	oklab(38.74% -0.0079 -0.1303)
OKLCH	oklch(38.74% 0.131 266.5)
XYZ	xyz(6.9101, 5.5180, 24.3630)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D89 #897024

analogous

#247089 #243D89 #3E2489

triadic

#243D89 #89243D #3D8924

tetradic

#243D89 #892470 #897024 #24893E

square

#243D89 #892470 #897024 #24893E

split-complementary

#243D89 #893E24 #708924

monochromatic

#0B1228 #172759 #243D89 #3153B9 #5574D2

Accessibility & contrast

On white

9.98

#243D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#243D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D89

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D89	#FFFFFF	#000000	##FFFFFF
##243D89	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02478C

Deuteranopia (green-blind)

#003E87

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243d89;
/* rgb */ color: rgb(36, 61, 137);
/* oklch */ color: oklch(38.7% 0.131 266.5);

Tailwind

colors: {
  custom: {
    50: '#6d72ac',
    500: '#243d89',
    950: '#000000',
  },
}

SCSS

$custom: #243d89;
$custom-light: #6d72ac;
$custom-dark: #000000;

JSON

{
  "hex": "#243d89",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 137
  },
  "hsl": {
    "h": 225.149,
    "s": 58.382,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38741,
    "c": 0.13058,
    "h": 266.5
  },
  "luminance": 0.05519
}

Semantic roles & 50–950 ramp

primary

#243D89

secondary

#B79E52

accent

#BB46E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243D89

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

Preview Lab → · Contrast checker → · Palette generator →