#403FB3#403FB3

#403FB3 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.4% C 0.179 H 276.7°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#403FB3
RGB	rgb(64, 63, 179)
HSL	hsl(241, 48%, 47%)
HSV	hsv(241, 65%, 70%)
CMYK	cmyk(64.2%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(33.77, 36.48, -61.52)
CIE-LCH	lch(33.77, 71.53, 300.67°)
OKLab	oklab(44.41% 0.0207 -0.1773)
OKLCH	oklch(44.41% 0.179 276.7)
XYZ	xyz(12.0259, 7.8987, 43.5299)
Luminance	0.0790 (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

#403FB3 #B2B33F

analogous

#3F78B3 #403FB3 #7A3FB3

triadic

#403FB3 #B3403F #3FB340

tetradic

#403FB3 #B33F78 #B2B33F #3FB37A

square

#403FB3 #B33F78 #B2B33F #3FB37A

split-complementary

#403FB3 #B37A3F #78B33F

monochromatic

#201F58 #302F86 #403FB3 #6766C9 #9493D9

Accessibility & contrast

On white

8.14

#403FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#403FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FB3

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FB3	#FFFFFF	#000000	##FFFFFF
##403FB3	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#004AB1

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403fb3;
/* rgb */ color: rgb(64, 63, 179);
/* oklch */ color: oklch(44.4% 0.179 276.7);

Tailwind

colors: {
  custom: {
    50: '#8274cb',
    500: '#403fb3',
    950: '#000000',
  },
}

SCSS

$custom: #403fb3;
$custom-light: #8274cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403fb3",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 240.517,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44411,
    "c": 0.17856,
    "h": 276.7
  },
  "luminance": 0.079
}

Semantic roles & 50–950 ramp

primary

#403FB3

secondary

#C4C489

accent

#D850D6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403FB3

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

Preview Lab → · Contrast checker → · Palette generator →