#403DB7#403DB7

#403DB7 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.186 H 276.8°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#403DB7
RGB	rgb(64, 61, 183)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 67%, 72%)
CMYK	cmyk(65%, 66.7%, 0%, 28.2%)
CIE-LAB	lab(33.66, 39.05, -64.08)
CIE-LCH	lch(33.66, 75.04, 301.36°)
OKLab	oklab(44.44% 0.0219 -0.1848)
OKLCH	oklch(44.44% 0.186 276.8)
XYZ	xyz(12.3276, 7.8453, 45.6552)
Luminance	0.0785 (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

#403DB7 #B4B73D

analogous

#3D77B7 #403DB7 #7D3DB7

triadic

#403DB7 #B7403D #3DB740

tetradic

#403DB7 #B73D77 #B4B73D #3DB77D

square

#403DB7 #B73D77 #B4B73D #3DB77D

split-complementary

#403DB7 #B77D3D #77B73D

monochromatic

#201E5B #302E89 #403DB7 #6865CC #9593DB

Accessibility & contrast

On white

8.17

#403DB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#403DB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DB7

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DB7	#FFFFFF	#000000	##FFFFFF
##403DB7	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403db7;
/* rgb */ color: rgb(64, 61, 183);
/* oklch */ color: oklch(44.4% 0.186 276.8);

Tailwind

colors: {
  custom: {
    50: '#8373ce',
    500: '#403db7',
    950: '#000000',
  },
}

SCSS

$custom: #403db7;
$custom-light: #8373ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403db7",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 183
  },
  "hsl": {
    "h": 241.475,
    "s": 50,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44436,
    "c": 0.18613,
    "h": 276.8
  },
  "luminance": 0.07846
}

Semantic roles & 50–950 ramp

primary

#403DB7

secondary

#C5C689

accent

#DA4ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403DB7

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

Preview Lab → · Contrast checker → · Palette generator →