#403EB5#403EB5

#403EB5 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.4% C 0.182 H 276.7°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#403EB5
RGB	rgb(64, 62, 181)
HSL	hsl(241, 49%, 48%)
HSV	hsv(241, 66%, 71%)
CMYK	cmyk(64.6%, 65.7%, 0%, 29%)
CIE-LAB	lab(33.71, 37.77, -62.81)
CIE-LCH	lch(33.71, 73.29, 301.02°)
OKLab	oklab(44.42% 0.0213 -0.1811)
OKLCH	oklch(44.42% 0.182 276.7)
XYZ	xyz(12.1748, 7.8704, 44.5847)
Luminance	0.0787 (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

#403EB5 #B3B53E

analogous

#3E78B5 #403EB5 #7B3EB5

triadic

#403EB5 #B5403E #3EB540

tetradic

#403EB5 #B53E78 #B3B53E #3EB57B

square

#403EB5 #B53E78 #B3B53E #3EB57B

split-complementary

#403EB5 #B57B3E #78B53E

monochromatic

#201F5A #302E87 #403EB5 #6766CA #9493DA

Accessibility & contrast

On white

8.16

#403EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#403EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EB5

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EB5	#FFFFFF	#000000	##FFFFFF
##403EB5	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B9

Deuteranopia (green-blind)

#004AB3

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403eb5;
/* rgb */ color: rgb(64, 62, 181);
/* oklch */ color: oklch(44.4% 0.182 276.7);

Tailwind

colors: {
  custom: {
    50: '#8374cc',
    500: '#403eb5',
    950: '#000000',
  },
}

SCSS

$custom: #403eb5;
$custom-light: #8374cc;
$custom-dark: #000000;

JSON

{
  "hex": "#403eb5",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 241.008,
    "s": 48.971,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44421,
    "c": 0.18236,
    "h": 276.7
  },
  "luminance": 0.07871
}

Semantic roles & 50–950 ramp

primary

#403EB5

secondary

#C4C589

accent

#D94FD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403EB5

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

Preview Lab → · Contrast checker → · Palette generator →