#403DB4#403DB4

#403DB4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.182 H 277.0°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#403DB4
RGB	rgb(64, 61, 180)
HSL	hsl(242, 49%, 47%)
HSV	hsv(242, 66%, 71%)
CMYK	cmyk(64.4%, 66.1%, 0%, 29.4%)
CIE-LAB	lab(33.40, 38.05, -62.73)
CIE-LCH	lch(33.40, 73.36, 301.24°)
OKLab	oklab(44.17% 0.0222 -0.1809)
OKLCH	oklch(44.17% 0.182 277)
XYZ	xyz(12.0186, 7.7218, 44.0283)
Luminance	0.0772 (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

#403DB4 #B1B43D

analogous

#3D75B4 #403DB4 #7C3DB4

triadic

#403DB4 #B4403D #3DB440

tetradic

#403DB4 #B43D75 #B1B43D #3DB47C

square

#403DB4 #B43D75 #B1B43D #3DB47C

split-complementary

#403DB4 #B47C3D #75B43D

monochromatic

#1F1E59 #302E86 #403DB4 #6664CA #9392DA

Accessibility & contrast

On white

8.25

#403DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#403DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DB4

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DB4	#FFFFFF	#000000	##FFFFFF
##403DB4	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403db4;
/* rgb */ color: rgb(64, 61, 180);
/* oklch */ color: oklch(44.2% 0.182 277.0);

Tailwind

colors: {
  custom: {
    50: '#8373cb',
    500: '#403db4',
    950: '#000000',
  },
}

SCSS

$custom: #403db4;
$custom-light: #8373cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403db4",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 180
  },
  "hsl": {
    "h": 241.513,
    "s": 49.378,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44165,
    "c": 0.18225,
    "h": 277
  },
  "luminance": 0.07723
}

Semantic roles & 50–950 ramp

primary

#403DB4

secondary

#C3C588

accent

#D94FD5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403DB4

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

Preview Lab → · Contrast checker → · Palette generator →