#403EB8#403EB8

#403EB8 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.186 H 276.5°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#403EB8
RGB	rgb(64, 62, 184)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 66%, 72%)
CMYK	cmyk(65.2%, 66.3%, 0%, 27.8%)
CIE-LAB	lab(33.97, 38.78, -64.15)
CIE-LCH	lch(33.97, 74.96, 301.15°)
OKLab	oklab(44.69% 0.021 -0.1851)
OKLCH	oklch(44.69% 0.186 276.5)
XYZ	xyz(12.4859, 7.9949, 46.2233)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.30

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EB8 #B6B83E

analogous

#3E79B8 #403EB8 #7D3EB8

triadic

#403EB8 #B8403E #3EB840

tetradic

#403EB8 #B83E79 #B6B83E #3EB87D

square

#403EB8 #B83E79 #B6B83E #3EB87D

split-complementary

#403EB8 #B87D3E #79B83E

monochromatic

#201F5C #302F8A #403EB8 #6967CC #9695DB

Accessibility & contrast

On white

8.08

#403EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#403EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EB8

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EB8	#FFFFFF	#000000	##FFFFFF
##403EB8	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BC

Deuteranopia (green-blind)

#004BB6

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403eb8;
/* rgb */ color: rgb(64, 62, 184);
/* oklch */ color: oklch(44.7% 0.186 276.5);

Tailwind

colors: {
  custom: {
    50: '#8374ce',
    500: '#403eb8',
    950: '#000000',
  },
}

SCSS

$custom: #403eb8;
$custom-light: #8374ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403eb8",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 184
  },
  "hsl": {
    "h": 240.984,
    "s": 49.593,
    "l": 48.235
  },
  "oklch": {
    "l": 0.4469,
    "c": 0.18626,
    "h": 276.5
  },
  "luminance": 0.07996
}

Semantic roles & 50–950 ramp

primary

#403EB8

secondary

#C6C78B

accent

#D94FD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403EB8

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

Preview Lab → · Contrast checker → · Palette generator →