#403DB1#403DB1

#403DB1 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.178 H 277.3°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#403DB1
RGB	rgb(64, 61, 177)
HSL	hsl(242, 49%, 47%)
HSV	hsv(242, 66%, 69%)
CMYK	cmyk(63.8%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(33.14, 37.04, -61.37)
CIE-LCH	lch(33.14, 71.68, 301.11°)
OKLab	oklab(43.9% 0.0225 -0.1769)
OKLCH	oklch(43.9% 0.178 277.3)
XYZ	xyz(11.7163, 7.6009, 42.4361)
Luminance	0.0760 (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

#403DB1 #AEB13D

analogous

#3D74B1 #403DB1 #7A3DB1

triadic

#403DB1 #B1403D #3DB140

tetradic

#403DB1 #B13D74 #AEB13D #3DB17A

square

#403DB1 #B13D74 #AEB13D #3DB17A

split-complementary

#403DB1 #B17A3D #74B13D

monochromatic

#1F1E56 #302D83 #403DB1 #6562C9 #9290D9

Accessibility & contrast

On white

8.33

#403DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DB1

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DB1	#FFFFFF	#000000	##FFFFFF
##403DB1	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B5

Deuteranopia (green-blind)

#0049AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403db1;
/* rgb */ color: rgb(64, 61, 177);
/* oklch */ color: oklch(43.9% 0.178 277.3);

Tailwind

colors: {
  custom: {
    50: '#8273c9',
    500: '#403db1',
    950: '#000000',
  },
}

SCSS

$custom: #403db1;
$custom-light: #8273c9;
$custom-dark: #000000;

JSON

{
  "hex": "#403db1",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 241.552,
    "s": 48.739,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43897,
    "c": 0.17834,
    "h": 277.3
  },
  "luminance": 0.07602
}

Semantic roles & 50–950 ramp

primary

#403DB1

secondary

#C2C486

accent

#D850D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403DB1

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

Preview Lab → · Contrast checker → · Palette generator →