#403DB6#403DB6

#403DB6 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.185 H 276.8°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#403DB6
RGB	rgb(64, 61, 182)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 66%, 71%)
CMYK	cmyk(64.8%, 66.5%, 0%, 28.6%)
CIE-LAB	lab(33.57, 38.71, -63.63)
CIE-LCH	lch(33.57, 74.48, 301.32°)
OKLab	oklab(44.35% 0.022 -0.1835)
OKLCH	oklch(44.35% 0.185 276.8)
XYZ	xyz(12.2238, 7.8039, 45.1090)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.38

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DB6 #B3B63D

analogous

#3D76B6 #403DB6 #7D3DB6

triadic

#403DB6 #B6403D #3DB640

tetradic

#403DB6 #B63D76 #B3B63D #3DB67D

square

#403DB6 #B63D76 #B3B63D #3DB67D

split-complementary

#403DB6 #B67D3D #76B63D

monochromatic

#201E5A #302E88 #403DB6 #6765CB #9493DB

Accessibility & contrast

On white

8.20

#403DB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#403DB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DB6

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DB6	#FFFFFF	#000000	##FFFFFF
##403DB6	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#004AB4

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403db6;
/* rgb */ color: rgb(64, 61, 182);
/* oklch */ color: oklch(44.3% 0.185 276.8);

Tailwind

colors: {
  custom: {
    50: '#8373cd',
    500: '#403db6',
    950: '#000000',
  },
}

SCSS

$custom: #403db6;
$custom-light: #8373cd;
$custom-dark: #000000;

JSON

{
  "hex": "#403db6",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 182
  },
  "hsl": {
    "h": 241.488,
    "s": 49.794,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44346,
    "c": 0.18485,
    "h": 276.8
  },
  "luminance": 0.07805
}

Semantic roles & 50–950 ramp

primary

#403DB6

secondary

#C4C689

accent

#D94ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403DB6

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

Preview Lab → · Contrast checker → · Palette generator →