#403CAB#403CAB

#403CAB is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.172 H 278.0°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#403CAB
RGB	rgb(64, 60, 171)
HSL	hsl(242, 48%, 45%)
HSV	hsv(242, 65%, 67%)
CMYK	cmyk(62.6%, 64.9%, 0%, 32.9%)
CIE-LAB	lab(32.39, 35.65, -59.01)
CIE-LCH	lch(32.39, 68.94, 301.14°)
OKLab	oklab(43.2% 0.0239 -0.17)
OKLCH	oklch(43.2% 0.172 278)
XYZ	xyz(11.0785, 7.2611, 39.3379)
Luminance	0.0726 (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

#403CAB #A7AB3C

analogous

#3C70AB #403CAB #773CAB

triadic

#403CAB #AB403C #3CAB40

tetradic

#403CAB #AB3C70 #A7AB3C #3CAB77

square

#403CAB #AB3C70 #A7AB3C #3CAB77

split-complementary

#403CAB #AB773C #70AB3C

monochromatic

#1E1C50 #2F2C7E #403CAB #625EC6 #8E8BD6

Accessibility & contrast

On white

8.56

#403CAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#403CAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CAB

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CAB	#FFFFFF	#000000	##FFFFFF
##403CAB	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AF

Deuteranopia (green-blind)

#0048A9

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403cab;
/* rgb */ color: rgb(64, 60, 171);
/* oklch */ color: oklch(43.2% 0.172 278.0);

Tailwind

colors: {
  custom: {
    50: '#8172c5',
    500: '#403cab',
    950: '#000000',
  },
}

SCSS

$custom: #403cab;
$custom-light: #8172c5;
$custom-dark: #000000;

JSON

{
  "hex": "#403cab",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 171
  },
  "hsl": {
    "h": 242.162,
    "s": 48.052,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43197,
    "c": 0.17166,
    "h": 278
  },
  "luminance": 0.07262
}

Semantic roles & 50–950 ramp

primary

#403CAB

secondary

#BFC182

accent

#D850D3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403CAB

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

Preview Lab → · Contrast checker → · Palette generator →