#403A8D#403A8D

#403A8D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.133 H 281.9°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#403A8D
RGB	rgb(64, 58, 141)
HSL	hsl(244, 42%, 39%)
HSV	hsv(244, 59%, 55%)
CMYK	cmyk(54.6%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(29.51, 26.85, -45.48)
CIE-LCH	lch(29.51, 52.81, 300.56°)
OKLab	oklab(40.33% 0.0274 -0.1302)
OKLCH	oklch(40.33% 0.133 281.9)
XYZ	xyz(8.4337, 6.0387, 25.9153)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403A8D #878D3A

analogous

#3A5E8D #403A8D #6A3A8D

triadic

#403A8D #8D403A #3A8D40

tetradic

#403A8D #8D3A5E #878D3A #3A8D6A

square

#403A8D #8D3A5E #878D3A #3A8D6A

split-complementary

#403A8D #8D6A3A #5E8D3A

monochromatic

#191636 #2C2862 #403A8D #564EB6 #7F79C8

Accessibility & contrast

On white

9.51

#403A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#403A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403A8D

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403A8D	#FFFFFF	#000000	##FFFFFF
##403A8D	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00438B

Tritanopia (blue-blind)

#1F4D5D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #403a8d;
/* rgb */ color: rgb(64, 58, 141);
/* oklch */ color: oklch(40.3% 0.133 281.9);

Tailwind

colors: {
  custom: {
    50: '#7c70af',
    500: '#403a8d',
    950: '#000000',
  },
}

SCSS

$custom: #403a8d;
$custom-light: #7c70af;
$custom-dark: #000000;

JSON

{
  "hex": "#403a8d",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 244.337,
    "s": 41.709,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40328,
    "c": 0.13308,
    "h": 281.9
  },
  "luminance": 0.06039
}

Semantic roles & 50–950 ramp

primary

#403A8D

secondary

#ADB171

accent

#D256C9

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #403A8D

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

Preview Lab → · Contrast checker → · Palette generator →