#403FB6#403FB6

#403FB6 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.182 H 276.4°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#403FB6
RGB	rgb(64, 63, 182)
HSL	hsl(241, 49%, 48%)
HSV	hsv(241, 65%, 71%)
CMYK	cmyk(64.8%, 65.4%, 0%, 28.6%)
CIE-LAB	lab(34.03, 37.49, -62.88)
CIE-LCH	lch(34.03, 73.21, 300.81°)
OKLab	oklab(44.68% 0.0205 -0.1813)
OKLCH	oklch(44.68% 0.182 276.4)
XYZ	xyz(12.3326, 8.0214, 45.1453)
Luminance	0.0802 (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

#403FB6 #B5B63F

analogous

#3F79B6 #403FB6 #7B3FB6

triadic

#403FB6 #B6403F #3FB640

tetradic

#403FB6 #B63F79 #B5B63F #3FB67B

square

#403FB6 #B63F79 #B5B63F #3FB67B

split-complementary

#403FB6 #B67B3F #79B63F

monochromatic

#20205B #302F89 #403FB6 #6868CB #9695DA

Accessibility & contrast

On white

8.06

#403FB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#403FB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FB6

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FB6	#FFFFFF	#000000	##FFFFFF
##403FB6	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BA

Deuteranopia (green-blind)

#004BB4

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403fb6;
/* rgb */ color: rgb(64, 63, 182);
/* oklch */ color: oklch(44.7% 0.182 276.4);

Tailwind

colors: {
  custom: {
    50: '#8374cd',
    500: '#403fb6',
    950: '#000000',
  },
}

SCSS

$custom: #403fb6;
$custom-light: #8374cd;
$custom-dark: #000000;

JSON

{
  "hex": "#403fb6",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 182
  },
  "hsl": {
    "h": 240.504,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44677,
    "c": 0.18248,
    "h": 276.4
  },
  "luminance": 0.08022
}

Semantic roles & 50–950 ramp

primary

#403FB6

secondary

#C5C68B

accent

#D850D7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403FB6

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

Preview Lab → · Contrast checker → · Palette generator →