#403DA0#403DA0

#403DA0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.156 H 278.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#403DA0
RGB	rgb(64, 61, 160)
HSL	hsl(242, 45%, 43%)
HSV	hsv(242, 62%, 63%)
CMYK	cmyk(60%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(31.73, 31.31, -53.48)
CIE-LCH	lch(31.73, 61.97, 300.35°)
OKLab	oklab(42.43% 0.0238 -0.1537)
OKLCH	oklch(42.43% 0.156 278.8)
XYZ	xyz(10.1262, 6.9648, 34.0616)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA0 #9DA03D

analogous

#3D6BA0 #403DA0 #713DA0

triadic

#403DA0 #A0403D #3DA040

tetradic

#403DA0 #A03D6B #9DA03D #3DA071

square

#403DA0 #A03D6B #9DA03D #3DA071

split-complementary

#403DA0 #A0713D #6BA03D

monochromatic

#1D1B47 #2E2C74 #403DA0 #5D5AC0 #8986D1

Accessibility & contrast

On white

8.77

#403DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#403DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA0

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA0	#FFFFFF	#000000	##FFFFFF
##403DA0	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA3

Deuteranopia (green-blind)

#00479E

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403da0;
/* rgb */ color: rgb(64, 61, 160);
/* oklch */ color: oklch(42.4% 0.156 278.8);

Tailwind

colors: {
  custom: {
    50: '#7f73bd',
    500: '#403da0',
    950: '#000000',
  },
}

SCSS

$custom: #403da0;
$custom-light: #7f73bd;
$custom-dark: #000000;

JSON

{
  "hex": "#403da0",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 241.818,
    "s": 44.796,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42427,
    "c": 0.15557,
    "h": 278.8
  },
  "luminance": 0.06966
}

Semantic roles & 50–950 ramp

primary

#403DA0

secondary

#B9BB7D

accent

#D453D1

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA0

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

Preview Lab → · Contrast checker → · Palette generator →