#403BB4#403BB4

#403BB4 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.185 H 277.4°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#403BB4
RGB	rgb(64, 59, 180)
HSL	hsl(242, 51%, 47%)
HSV	hsv(242, 67%, 71%)
CMYK	cmyk(64.4%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(32.95, 39.26, -63.47)
CIE-LCH	lch(32.95, 74.63, 301.74°)
OKLab	oklab(43.84% 0.0238 -0.1831)
OKLCH	oklch(43.84% 0.185 277.4)
XYZ	xyz(11.9139, 7.5122, 43.9933)
Luminance	0.0751 (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

#403BB4 #AFB43B

analogous

#3B73B4 #403BB4 #7D3BB4

triadic

#403BB4 #B4403B #3BB440

tetradic

#403BB4 #B43B73 #AFB43B #3BB47D

square

#403BB4 #B43B73 #AFB43B #3BB47D

split-complementary

#403BB4 #B47D3B #73B43B

monochromatic

#1F1D58 #302C86 #403BB4 #6561CB #928FDA

Accessibility & contrast

On white

8.39

#403BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#403BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB4

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB4	#FFFFFF	#000000	##FFFFFF
##403BB4	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403bb4;
/* rgb */ color: rgb(64, 59, 180);
/* oklch */ color: oklch(43.8% 0.185 277.4);

Tailwind

colors: {
  custom: {
    50: '#8372cb',
    500: '#403bb4',
    950: '#000000',
  },
}

SCSS

$custom: #403bb4;
$custom-light: #8372cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb4",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 242.479,
    "s": 50.628,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43838,
    "c": 0.1846,
    "h": 277.4
  },
  "luminance": 0.07513
}

Semantic roles & 50–950 ramp

primary

#403BB4

secondary

#C3C586

accent

#DA4ED4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403BB4

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

Preview Lab → · Contrast checker → · Palette generator →