#403EA7#403EA7

#403EA7 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.164 H 277.9°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#403EA7
RGB	rgb(64, 62, 167)
HSL	hsl(241, 46%, 45%)
HSV	hsv(241, 63%, 65%)
CMYK	cmyk(61.7%, 62.9%, 0%, 34.5%)
CIE-LAB	lab(32.53, 33.05, -56.38)
CIE-LCH	lch(32.53, 65.35, 300.38°)
OKLab	oklab(43.2% 0.0225 -0.1623)
OKLCH	oklch(43.2% 0.164 277.9)
XYZ	xyz(10.8098, 7.3244, 37.3958)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.40

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA7 #A5A73E

analogous

#3E70A7 #403EA7 #753EA7

triadic

#403EA7 #A7403E #3EA740

tetradic

#403EA7 #A73E70 #A5A73E #3EA775

square

#403EA7 #A73E70 #A5A73E #3EA775

split-complementary

#403EA7 #A7753E #70A73E

monochromatic

#1E1D4E #2F2D7A #403EA7 #615FC3 #8D8BD4

Accessibility & contrast

On white

8.52

#403EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA7

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA7	#FFFFFF	#000000	##FFFFFF
##403EA7	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AA

Deuteranopia (green-blind)

#0048A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ea7;
/* rgb */ color: rgb(64, 62, 167);
/* oklch */ color: oklch(43.2% 0.164 277.9);

Tailwind

colors: {
  custom: {
    50: '#8073c2',
    500: '#403ea7',
    950: '#000000',
  },
}

SCSS

$custom: #403ea7;
$custom-light: #8073c2;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea7",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 167
  },
  "hsl": {
    "h": 241.143,
    "s": 45.852,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43196,
    "c": 0.16381,
    "h": 277.9
  },
  "luminance": 0.07325
}

Semantic roles & 50–950 ramp

primary

#403EA7

secondary

#BEBF82

accent

#D652D3

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403EA7

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

Preview Lab → · Contrast checker → · Palette generator →