#403F89#403F89

#403F89 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.120 H 280.3°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#403F89
RGB	rgb(64, 63, 137)
HSL	hsl(241, 37%, 39%)
HSV	hsv(241, 54%, 54%)
CMYK	cmyk(53.3%, 54%, 0%, 46.3%)
CIE-LAB	lab(30.52, 22.24, -41.38)
CIE-LCH	lch(30.52, 46.97, 298.26°)
OKLab	oklab(40.99% 0.0215 -0.1181)
OKLCH	oklch(40.99% 0.12 280.3)
XYZ	xyz(8.4058, 6.4507, 24.4642)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F89 #88893F

analogous

#3F6389 #403F89 #653F89

triadic

#403F89 #89403F #3F8940

tetradic

#403F89 #893F63 #88893F #3F8965

square

#403F89 #893F63 #88893F #3F8965

split-complementary

#403F89 #89653F #63893F

monochromatic

#191835 #2C2C5F #403F89 #5655B1 #7F7EC4

Accessibility & contrast

On white

9.17

#403F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#403F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F89

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F89	#FFFFFF	#000000	##FFFFFF
##403F89	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184B8C

Deuteranopia (green-blind)

#0F4587

Tritanopia (blue-blind)

#224F5D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403f89;
/* rgb */ color: rgb(64, 63, 137);
/* oklch */ color: oklch(41.0% 0.120 280.3);

Tailwind

colors: {
  custom: {
    50: '#7b74ac',
    500: '#403f89',
    950: '#000000',
  },
}

SCSS

$custom: #403f89;
$custom-light: #7b74ac;
$custom-dark: #000000;

JSON

{
  "hex": "#403f89",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 137
  },
  "hsl": {
    "h": 240.811,
    "s": 37,
    "l": 39.216
  },
  "oklch": {
    "l": 0.4099,
    "c": 0.12007,
    "h": 280.3
  },
  "luminance": 0.06451
}

Semantic roles & 50–950 ramp

primary

#403F89

secondary

#ADAE76

accent

#CD5BCB

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403F89

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

Preview Lab → · Contrast checker → · Palette generator →