#403AB8#403AB8

#403AB8 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.191 H 277.2°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#403AB8
RGB	rgb(64, 58, 184)
HSL	hsl(243, 52%, 47%)
HSV	hsv(243, 68%, 72%)
CMYK	cmyk(65.2%, 68.5%, 0%, 27.8%)
CIE-LAB	lab(33.08, 41.18, -65.61)
CIE-LCH	lch(33.08, 77.46, 302.11°)
OKLab	oklab(44.05% 0.024 -0.1893)
OKLCH	oklch(44.05% 0.191 277.2)
XYZ	xyz(12.2763, 7.5758, 46.1534)
Luminance	0.0758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.81

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403AB8 #B2B83A

analogous

#3A73B8 #403AB8 #7F3AB8

triadic

#403AB8 #B8403A #3AB840

tetradic

#403AB8 #B83A73 #B2B83A #3AB87F

square

#403AB8 #B83A73 #B2B83A #3AB87F

split-complementary

#403AB8 #B87F3A #73B83A

monochromatic

#201D5B #302B89 #403AB8 #6762CD #9490DC

Accessibility & contrast

On white

8.35

#403AB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403AB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB8

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB8	#FFFFFF	#000000	##FFFFFF
##403AB8	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BC

Deuteranopia (green-blind)

#0048B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403ab8;
/* rgb */ color: rgb(64, 58, 184);
/* oklch */ color: oklch(44.0% 0.191 277.2);

Tailwind

colors: {
  custom: {
    50: '#8471ce',
    500: '#403ab8',
    950: '#000000',
  },
}

SCSS

$custom: #403ab8;
$custom-light: #8471ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab8",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 184
  },
  "hsl": {
    "h": 242.857,
    "s": 52.066,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44048,
    "c": 0.19086,
    "h": 277.2
  },
  "luminance": 0.07577
}

Semantic roles & 50–950 ramp

primary

#403AB8

secondary

#C4C787

accent

#DC4CD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403AB8

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

Preview Lab → · Contrast checker → · Palette generator →