#403DB9#403DB9

#403DB9 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.6% C 0.189 H 276.6°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#403DB9
RGB	rgb(64, 61, 185)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 67%, 73%)
CMYK	cmyk(65.4%, 67%, 0%, 27.5%)
CIE-LAB	lab(33.84, 39.72, -64.97)
CIE-LCH	lch(33.84, 76.15, 301.44°)
OKLab	oklab(44.62% 0.0217 -0.1875)
OKLCH	oklch(44.62% 0.189 276.6)
XYZ	xyz(12.5372, 7.9292, 46.7593)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.41

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DB9 #B6B93D

analogous

#3D78B9 #403DB9 #7E3DB9

triadic

#403DB9 #B9403D #3DB940

tetradic

#403DB9 #B93D78 #B6B93D #3DB97E

square

#403DB9 #B93D78 #B6B93D #3DB97E

split-complementary

#403DB9 #B97E3D #78B93D

monochromatic

#201F5D #302E8B #403DB9 #6966CD #9695DC

Accessibility & contrast

On white

8.12

#403DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#403DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DB9

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DB9	#FFFFFF	#000000	##FFFFFF
##403DB9	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BD

Deuteranopia (green-blind)

#004AB7

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403db9;
/* rgb */ color: rgb(64, 61, 185);
/* oklch */ color: oklch(44.6% 0.189 276.6);

Tailwind

colors: {
  custom: {
    50: '#8473cf',
    500: '#403db9',
    950: '#000000',
  },
}

SCSS

$custom: #403db9;
$custom-light: #8473cf;
$custom-dark: #000000;

JSON

{
  "hex": "#403db9",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 185
  },
  "hsl": {
    "h": 241.452,
    "s": 50.407,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44618,
    "c": 0.18871,
    "h": 276.6
  },
  "luminance": 0.0793
}

Semantic roles & 50–950 ramp

primary

#403DB9

secondary

#C6C78B

accent

#DA4ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403DB9

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

Preview Lab → · Contrast checker → · Palette generator →