#403F90#403F90

#403F90 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.130 H 279.6°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#403F90
RGB	rgb(64, 63, 144)
HSL	hsl(241, 39%, 41%)
HSV	hsv(241, 56%, 56%)
CMYK	cmyk(55.6%, 56.3%, 0%, 43.5%)
CIE-LAB	lab(31.02, 24.60, -44.89)
CIE-LCH	lch(31.02, 51.19, 298.73°)
OKLab	oklab(41.52% 0.0218 -0.1285)
OKLCH	oklch(41.52% 0.13 279.6)
XYZ	xyz(8.9243, 6.6581, 27.1950)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F90 #8F903F

analogous

#3F6690 #403F90 #683F90

triadic

#403F90 #90403F #3F9040

tetradic

#403F90 #903F66 #8F903F #3F9068

square

#403F90 #903F66 #8F903F #3F9068

split-complementary

#403F90 #90683F #66903F

monochromatic

#1A1A3B #2D2C65 #403F90 #5857B5 #8281C8

Accessibility & contrast

On white

9.01

#403F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#403F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F90

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F90	#FFFFFF	#000000	##FFFFFF
##403F90	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4C93

Deuteranopia (green-blind)

#00468E

Tritanopia (blue-blind)

#1B5261

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403f90;
/* rgb */ color: rgb(64, 63, 144);
/* oklch */ color: oklch(41.5% 0.130 279.6);

Tailwind

colors: {
  custom: {
    50: '#7c74b1',
    500: '#403f90',
    950: '#000000',
  },
}

SCSS

$custom: #403f90;
$custom-light: #7c74b1;
$custom-dark: #000000;

JSON

{
  "hex": "#403f90",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 144
  },
  "hsl": {
    "h": 240.741,
    "s": 39.13,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41516,
    "c": 0.13031,
    "h": 279.6
  },
  "luminance": 0.06659
}

Semantic roles & 50–950 ramp

primary

#403F90

secondary

#B2B278

accent

#CF59CE

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #403F90

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

Preview Lab → · Contrast checker → · Palette generator →