#403AB2#403AB2

#403AB2 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.5% C 0.183 H 277.8°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#403AB2
RGB	rgb(64, 58, 178)
HSL	hsl(243, 51%, 46%)
HSV	hsv(243, 67%, 70%)
CMYK	cmyk(64%, 67.4%, 0%, 30.2%)
CIE-LAB	lab(32.55, 39.20, -62.93)
CIE-LCH	lch(32.55, 74.14, 301.92°)
OKLab	oklab(43.5% 0.0248 -0.1815)
OKLCH	oklch(43.5% 0.183 277.8)
XYZ	xyz(11.6607, 7.3295, 42.9111)
Luminance	0.0733 (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

#403AB2 #ACB23A

analogous

#3A70B2 #403AB2 #7C3AB2

triadic

#403AB2 #B2403A #3AB240

tetradic

#403AB2 #B23A70 #ACB23A #3AB27C

square

#403AB2 #B23A70 #ACB23A #3AB27C

split-complementary

#403AB2 #B27C3A #70B23A

monochromatic

#1F1C56 #2F2B84 #403AB2 #645FCB #918DDA

Accessibility & contrast

On white

8.52

#403AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB2

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB2	#FFFFFF	#000000	##FFFFFF
##403AB2	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ab2;
/* rgb */ color: rgb(64, 58, 178);
/* oklch */ color: oklch(43.5% 0.183 277.8);

Tailwind

colors: {
  custom: {
    50: '#8271ca',
    500: '#403ab2',
    950: '#000000',
  },
}

SCSS

$custom: #403ab2;
$custom-light: #8271ca;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab2",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 178
  },
  "hsl": {
    "h": 243,
    "s": 50.847,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43495,
    "c": 0.18319,
    "h": 277.8
  },
  "luminance": 0.0733
}

Semantic roles & 50–950 ramp

primary

#403AB2

secondary

#C1C483

accent

#DA4DD3

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403AB2

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

Preview Lab → · Contrast checker → · Palette generator →