#403AB3#403AB3

#403AB3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.184 H 277.7°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#403AB3
RGB	rgb(64, 58, 179)
HSL	hsl(243, 51%, 46%)
HSV	hsv(243, 68%, 70%)
CMYK	cmyk(64.2%, 67.6%, 0%, 29.8%)
CIE-LAB	lab(32.63, 39.53, -63.38)
CIE-LCH	lch(32.63, 74.70, 301.95°)
OKLab	oklab(43.59% 0.0247 -0.1828)
OKLCH	oklch(43.59% 0.184 277.7)
XYZ	xyz(11.7615, 7.3698, 43.4418)
Luminance	0.0737 (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

#403AB3 #ADB33A

analogous

#3A71B3 #403AB3 #7D3AB3

triadic

#403AB3 #B3403A #3AB340

tetradic

#403AB3 #B33A71 #ADB33A #3AB37D

square

#403AB3 #B33A71 #ADB33A #3AB37D

split-complementary

#403AB3 #B37D3A #71B33A

monochromatic

#1F1C57 #2F2B85 #403AB3 #645FCB #918DDA

Accessibility & contrast

On white

8.49

#403AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB3

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB3	#FFFFFF	#000000	##FFFFFF
##403AB3	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ab3;
/* rgb */ color: rgb(64, 58, 179);
/* oklch */ color: oklch(43.6% 0.184 277.7);

Tailwind

colors: {
  custom: {
    50: '#8371cb',
    500: '#403ab3',
    950: '#000000',
  },
}

SCSS

$custom: #403ab3;
$custom-light: #8371cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab3",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 179
  },
  "hsl": {
    "h": 242.975,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43586,
    "c": 0.18447,
    "h": 277.7
  },
  "luminance": 0.07371
}

Semantic roles & 50–950 ramp

primary

#403AB3

secondary

#C2C584

accent

#DB4DD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403AB3

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

Preview Lab → · Contrast checker → · Palette generator →