#403EB4#403EB4

#403EB4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.181 H 276.8°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#403EB4
RGB	rgb(64, 62, 180)
HSL	hsl(241, 49%, 47%)
HSV	hsv(241, 66%, 71%)
CMYK	cmyk(64.4%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(33.63, 37.44, -62.35)
CIE-LCH	lch(33.63, 72.73, 300.98°)
OKLab	oklab(44.33% 0.0214 -0.1798)
OKLCH	oklch(44.33% 0.181 276.8)
XYZ	xyz(12.0725, 7.8295, 44.0462)
Luminance	0.0783 (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

#403EB4 #B2B43E

analogous

#3E77B4 #403EB4 #7B3EB4

triadic

#403EB4 #B4403E #3EB440

tetradic

#403EB4 #B43E77 #B2B43E #3EB47B

square

#403EB4 #B43E77 #B2B43E #3EB47B

split-complementary

#403EB4 #B47B3E #77B43E

monochromatic

#201F59 #302E86 #403EB4 #6765CA #9493DA

Accessibility & contrast

On white

8.18

#403EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#403EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EB4

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EB4	#FFFFFF	#000000	##FFFFFF
##403EB4	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403eb4;
/* rgb */ color: rgb(64, 62, 180);
/* oklch */ color: oklch(44.3% 0.181 276.8);

Tailwind

colors: {
  custom: {
    50: '#8374cb',
    500: '#403eb4',
    950: '#000000',
  },
}

SCSS

$custom: #403eb4;
$custom-light: #8374cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403eb4",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 241.017,
    "s": 48.76,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44331,
    "c": 0.18106,
    "h": 276.8
  },
  "luminance": 0.07831
}

Semantic roles & 50–950 ramp

primary

#403EB4

secondary

#C4C589

accent

#D84FD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403EB4

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

Preview Lab → · Contrast checker → · Palette generator →