#403AB6#403AB6

#403AB6 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.188 H 277.4°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#403AB6
RGB	rgb(64, 58, 182)
HSL	hsl(243, 52%, 47%)
HSV	hsv(243, 68%, 71%)
CMYK	cmyk(64.8%, 68.1%, 0%, 28.6%)
CIE-LAB	lab(32.90, 40.52, -64.72)
CIE-LCH	lch(32.90, 76.36, 302.05°)
OKLab	oklab(43.86% 0.0243 -0.1867)
OKLCH	oklch(43.86% 0.188 277.4)
XYZ	xyz(12.0682, 7.4925, 45.0571)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.80

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403AB6 #B0B63A

analogous

#3A72B6 #403AB6 #7E3AB6

triadic

#403AB6 #B6403A #3AB640

tetradic

#403AB6 #B63A72 #B0B63A #3AB67E

square

#403AB6 #B63A72 #B0B63A #3AB67E

split-complementary

#403AB6 #B67E3A #72B63A

monochromatic

#1F1C59 #302B88 #403AB6 #6661CD #938FDB

Accessibility & contrast

On white

8.40

#403AB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#403AB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB6

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB6	#FFFFFF	#000000	##FFFFFF
##403AB6	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BA

Deuteranopia (green-blind)

#0048B4

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ab6;
/* rgb */ color: rgb(64, 58, 182);
/* oklch */ color: oklch(43.9% 0.188 277.4);

Tailwind

colors: {
  custom: {
    50: '#8371cd',
    500: '#403ab6',
    950: '#000000',
  },
}

SCSS

$custom: #403ab6;
$custom-light: #8371cd;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab6",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 182
  },
  "hsl": {
    "h": 242.903,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43862,
    "c": 0.18831,
    "h": 277.4
  },
  "luminance": 0.07493
}

Semantic roles & 50–950 ramp

primary

#403AB6

secondary

#C3C686

accent

#DB4DD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403AB6

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

Preview Lab → · Contrast checker → · Palette generator →