#403FAE#403FAE

#403FAE is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.172 H 277.1°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#403FAE
RGB	rgb(64, 63, 174)
HSL	hsl(241, 47%, 46%)
HSV	hsv(241, 64%, 68%)
CMYK	cmyk(63.2%, 63.8%, 0%, 31.8%)
CIE-LAB	lab(33.35, 34.79, -59.24)
CIE-LCH	lch(33.35, 68.70, 300.43°)
OKLab	oklab(43.97% 0.0211 -0.1706)
OKLCH	oklch(43.97% 0.172 277.1)
XYZ	xyz(11.5294, 7.7001, 40.9149)
Luminance	0.0770 (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

#403FAE #ADAE3F

analogous

#3F76AE #403FAE #783FAE

triadic

#403FAE #AE403F #3FAE40

tetradic

#403FAE #AE3F76 #ADAE3F #3FAE78

square

#403FAE #AE3F76 #ADAE3F #3FAE78

split-complementary

#403FAE #AE783F #76AE3F

monochromatic

#1F1E54 #2F2F81 #403FAE #6464C7 #9190D7

Accessibility & contrast

On white

8.27

#403FAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#403FAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FAE

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FAE	#FFFFFF	#000000	##FFFFFF
##403FAE	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B2

Deuteranopia (green-blind)

#004AAC

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403fae;
/* rgb */ color: rgb(64, 63, 174);
/* oklch */ color: oklch(44.0% 0.172 277.1);

Tailwind

colors: {
  custom: {
    50: '#8174c7',
    500: '#403fae',
    950: '#000000',
  },
}

SCSS

$custom: #403fae;
$custom-light: #8174c7;
$custom-dark: #000000;

JSON

{
  "hex": "#403fae",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 174
  },
  "hsl": {
    "h": 240.541,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43973,
    "c": 0.17194,
    "h": 277.1
  },
  "luminance": 0.07701
}

Semantic roles & 50–950 ramp

primary

#403FAE

secondary

#C2C287

accent

#D651D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403FAE

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

Preview Lab → · Contrast checker → · Palette generator →