#403EA9#403EA9

#403EA9 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.167 H 277.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#403EA9
RGB	rgb(64, 62, 169)
HSL	hsl(241, 46%, 45%)
HSV	hsv(241, 63%, 66%)
CMYK	cmyk(62.1%, 63.3%, 0%, 33.7%)
CIE-LAB	lab(32.70, 33.73, -57.31)
CIE-LCH	lch(32.70, 66.50, 300.47°)
OKLab	oklab(43.37% 0.0223 -0.165)
OKLCH	oklch(43.37% 0.167 277.7)
XYZ	xyz(10.9961, 7.3990, 38.3771)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA9 #A7A93E

analogous

#3E72A9 #403EA9 #753EA9

triadic

#403EA9 #A9403E #3EA940

tetradic

#403EA9 #A93E72 #A7A93E #3EA975

square

#403EA9 #A93E72 #A7A93E #3EA975

split-complementary

#403EA9 #A9753E #72A93E

monochromatic

#1E1D4F #2F2E7C #403EA9 #6260C5 #8E8CD5

Accessibility & contrast

On white

8.47

#403EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#403EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA9

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA9	#FFFFFF	#000000	##FFFFFF
##403EA9	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ea9;
/* rgb */ color: rgb(64, 62, 169);
/* oklch */ color: oklch(43.4% 0.167 277.7);

Tailwind

colors: {
  custom: {
    50: '#8073c3',
    500: '#403ea9',
    950: '#000000',
  },
}

SCSS

$custom: #403ea9;
$custom-light: #8073c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea9",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 169
  },
  "hsl": {
    "h": 241.121,
    "s": 46.32,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43368,
    "c": 0.16651,
    "h": 277.7
  },
  "luminance": 0.074
}

Semantic roles & 50–950 ramp

primary

#403EA9

secondary

#BFC083

accent

#D652D3

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403EA9

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

Preview Lab → · Contrast checker → · Palette generator →