#403FB4#403FB4

#403FB4 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.180 H 276.6°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#403FB4
RGB	rgb(64, 63, 180)
HSL	hsl(241, 48%, 48%)
HSV	hsv(241, 65%, 71%)
CMYK	cmyk(64.4%, 65%, 0%, 29.4%)
CIE-LAB	lab(33.86, 36.82, -61.98)
CIE-LCH	lch(33.86, 72.09, 300.71°)
OKLab	oklab(44.5% 0.0206 -0.1787)
OKLCH	oklch(44.5% 0.18 276.6)
XYZ	xyz(12.1274, 7.9393, 44.0645)
Luminance	0.0794 (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

#403FB4 #B3B43F

analogous

#3F78B4 #403FB4 #7B3FB4

triadic

#403FB4 #B4403F #3FB440

tetradic

#403FB4 #B43F78 #B3B43F #3FB47B

square

#403FB4 #B43F78 #B3B43F #3FB47B

split-complementary

#403FB4 #B47B3F #78B43F

monochromatic

#201F59 #302F87 #403FB4 #6767CA #9494DA

Accessibility & contrast

On white

8.11

#403FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#403FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FB4

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FB4	#FFFFFF	#000000	##FFFFFF
##403FB4	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#004BB2

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403fb4;
/* rgb */ color: rgb(64, 63, 180);
/* oklch */ color: oklch(44.5% 0.180 276.6);

Tailwind

colors: {
  custom: {
    50: '#8274cb',
    500: '#403fb4',
    950: '#000000',
  },
}

SCSS

$custom: #403fb4;
$custom-light: #8274cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403fb4",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 180
  },
  "hsl": {
    "h": 240.513,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.445,
    "c": 0.17987,
    "h": 276.6
  },
  "luminance": 0.0794
}

Semantic roles & 50–950 ramp

primary

#403FB4

secondary

#C4C58A

accent

#D850D7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403FB4

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

Preview Lab → · Contrast checker → · Palette generator →