#403ABB#403ABB

#403ABB is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.3% C 0.195 H 277.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#403ABB
RGB	rgb(64, 58, 187)
HSL	hsl(243, 53%, 48%)
HSV	hsv(243, 69%, 73%)
CMYK	cmyk(65.8%, 69%, 0%, 26.7%)
CIE-LAB	lab(33.36, 42.16, -66.93)
CIE-LCH	lch(33.36, 79.11, 302.21°)
OKLab	oklab(44.33% 0.0236 -0.1932)
OKLCH	oklch(44.33% 0.195 277)
XYZ	xyz(12.5941, 7.7029, 47.8272)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.87

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403ABB #B5BB3A

analogous

#3A74BB #403ABB #813ABB

triadic

#403ABB #BB403A #3ABB40

tetradic

#403ABB #BB3A74 #B5BB3A #3ABB81

square

#403ABB #BB3A74 #B5BB3A #3ABB81

split-complementary

#403ABB #BB813A #74BB3A

monochromatic

#201D5E #302C8C #403ABB #6863CF #9692DD

Accessibility & contrast

On white

8.27

#403ABB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#403ABB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403ABB

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403ABB	#FFFFFF	#000000	##FFFFFF
##403ABB	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)

#0054BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403abb;
/* rgb */ color: rgb(64, 58, 187);
/* oklch */ color: oklch(44.3% 0.195 277.0);

Tailwind

colors: {
  custom: {
    50: '#8471d1',
    500: '#403abb',
    950: '#000000',
  },
}

SCSS

$custom: #403abb;
$custom-light: #8471d1;
$custom-dark: #000000;

JSON

{
  "hex": "#403abb",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 187
  },
  "hsl": {
    "h": 242.791,
    "s": 52.653,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44328,
    "c": 0.19465,
    "h": 277
  },
  "luminance": 0.07704
}

Semantic roles & 50–950 ramp

primary

#403ABB

secondary

#C5C888

accent

#DC4CD5

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #403ABB

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

Preview Lab → · Contrast checker → · Palette generator →