#403FA1#403FA1

#403FA1 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.154 H 278.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#403FA1
RGB	rgb(64, 63, 161)
HSL	hsl(241, 44%, 44%)
HSV	hsv(241, 61%, 63%)
CMYK	cmyk(60.2%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(32.30, 30.38, -53.16)
CIE-LCH	lch(32.30, 61.23, 299.75°)
OKLab	oklab(42.87% 0.0218 -0.1528)
OKLCH	oklch(42.87% 0.154 278.1)
XYZ	xyz(10.3228, 7.2175, 34.5604)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FA1 #A0A13F

analogous

#3F6FA1 #403FA1 #713FA1

triadic

#403FA1 #A1403F #3FA140

tetradic

#403FA1 #A13F6F #A0A13F #3FA171

square

#403FA1 #A13F6F #A0A13F #3FA171

split-complementary

#403FA1 #A1713F #6FA13F

monochromatic

#1D1D49 #2F2E75 #403FA1 #5E5DC0 #8A89D1

Accessibility & contrast

On white

8.59

#403FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#403FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FA1

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FA1	#FFFFFF	#000000	##FFFFFF
##403FA1	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A4

Deuteranopia (green-blind)

#00489F

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403fa1;
/* rgb */ color: rgb(64, 63, 161);
/* oklch */ color: oklch(42.9% 0.154 278.1);

Tailwind

colors: {
  custom: {
    50: '#7f74be',
    500: '#403fa1',
    950: '#000000',
  },
}

SCSS

$custom: #403fa1;
$custom-light: #7f74be;
$custom-dark: #000000;

JSON

{
  "hex": "#403fa1",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 240.612,
    "s": 43.75,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42871,
    "c": 0.15433,
    "h": 278.1
  },
  "luminance": 0.07218
}

Semantic roles & 50–950 ramp

primary

#403FA1

secondary

#BBBC80

accent

#D354D2

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403FA1

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

Preview Lab → · Contrast checker → · Palette generator →