#403CB3#403CB3

#403CB3 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.182 H 277.3°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#403CB3
RGB	rgb(64, 60, 179)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 66%, 70%)
CMYK	cmyk(64.2%, 66.5%, 0%, 29.8%)
CIE-LAB	lab(33.08, 38.32, -62.65)
CIE-LCH	lch(33.08, 73.44, 301.45°)
OKLab	oklab(43.91% 0.0231 -0.1807)
OKLCH	oklch(43.91% 0.182 277.3)
XYZ	xyz(11.8643, 7.5754, 43.4761)
Luminance	0.0758 (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

#403CB3 #AFB33C

analogous

#3C74B3 #403CB3 #7C3CB3

triadic

#403CB3 #B3403C #3CB340

tetradic

#403CB3 #B33C74 #AFB33C #3CB37C

square

#403CB3 #B33C74 #AFB33C #3CB37C

split-complementary

#403CB3 #B37C3C #74B33C

monochromatic

#1F1D57 #302D85 #403CB3 #6562CA #9290DA

Accessibility & contrast

On white

8.35

#403CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB3

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB3	#FFFFFF	#000000	##FFFFFF
##403CB3	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403cb3;
/* rgb */ color: rgb(64, 60, 179);
/* oklch */ color: oklch(43.9% 0.182 277.3);

Tailwind

colors: {
  custom: {
    50: '#8372cb',
    500: '#403cb3',
    950: '#000000',
  },
}

SCSS

$custom: #403cb3;
$custom-light: #8372cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb3",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 179
  },
  "hsl": {
    "h": 242.017,
    "s": 49.791,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4391,
    "c": 0.18213,
    "h": 277.3
  },
  "luminance": 0.07576
}

Semantic roles & 50–950 ramp

primary

#403CB3

secondary

#C3C586

accent

#D94ED5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403CB3

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

Preview Lab → · Contrast checker → · Palette generator →