#403EAA#403EAA

#403EAA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.168 H 277.6°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#403EAA
RGB	rgb(64, 62, 170)
HSL	hsl(241, 47%, 45%)
HSV	hsv(241, 64%, 67%)
CMYK	cmyk(62.4%, 63.5%, 0%, 33.3%)
CIE-LAB	lab(32.78, 34.06, -57.78)
CIE-LCH	lch(32.78, 67.07, 300.52°)
OKLab	oklab(43.45% 0.0223 -0.1664)
OKLCH	oklch(43.45% 0.168 277.6)
XYZ	xyz(11.0903, 7.4367, 38.8734)
Luminance	0.0744 (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

#403EAA #A8AA3E

analogous

#3E72AA #403EAA #763EAA

triadic

#403EAA #AA403E #3EAA40

tetradic

#403EAA #AA3E72 #A8AA3E #3EAA76

square

#403EAA #AA3E72 #A8AA3E #3EAA76

split-complementary

#403EAA #AA763E #72AA3E

monochromatic

#1E1D50 #2F2E7D #403EAA #6260C5 #8E8DD5

Accessibility & contrast

On white

8.44

#403EAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#403EAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EAA

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EAA	#FFFFFF	#000000	##FFFFFF
##403EAA	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AD

Deuteranopia (green-blind)

#0049A8

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403eaa;
/* rgb */ color: rgb(64, 62, 170);
/* oklch */ color: oklch(43.5% 0.168 277.6);

Tailwind

colors: {
  custom: {
    50: '#8173c4',
    500: '#403eaa',
    950: '#000000',
  },
}

SCSS

$custom: #403eaa;
$custom-light: #8173c4;
$custom-dark: #000000;

JSON

{
  "hex": "#403eaa",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 170
  },
  "hsl": {
    "h": 241.111,
    "s": 46.552,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43454,
    "c": 0.16785,
    "h": 277.6
  },
  "luminance": 0.07438
}

Semantic roles & 50–950 ramp

primary

#403EAA

secondary

#BFC084

accent

#D652D4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403EAA

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

Preview Lab → · Contrast checker → · Palette generator →