#403BA3#403BA3

#403BA3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.162 H 279.0°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#403BA3
RGB	rgb(64, 59, 163)
HSL	hsl(243, 47%, 44%)
HSV	hsv(243, 64%, 64%)
CMYK	cmyk(60.7%, 63.8%, 0%, 36.1%)
CIE-LAB	lab(31.49, 33.58, -55.68)
CIE-LCH	lch(31.49, 65.02, 301.10°)
OKLab	oklab(42.33% 0.0255 -0.1602)
OKLCH	oklch(42.33% 0.162 279)
XYZ	xyz(10.2871, 6.8615, 35.4255)
Luminance	0.0686 (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

#403BA3 #9EA33B

analogous

#3B6AA3 #403BA3 #743BA3

triadic

#403BA3 #A3403B #3BA340

tetradic

#403BA3 #A33B6A #9EA33B #3BA374

square

#403BA3 #A33B6A #9EA33B #3BA374

split-complementary

#403BA3 #A3743B #6AA33B

monochromatic

#1D1A49 #2E2B76 #403BA3 #5E58C3 #8985D3

Accessibility & contrast

On white

8.85

#403BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#403BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BA3

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BA3	#FFFFFF	#000000	##FFFFFF
##403BA3	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0046A1

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403ba3;
/* rgb */ color: rgb(64, 59, 163);
/* oklch */ color: oklch(42.3% 0.162 279.0);

Tailwind

colors: {
  custom: {
    50: '#8071bf',
    500: '#403ba3',
    950: '#000000',
  },
}

SCSS

$custom: #403ba3;
$custom-light: #8071bf;
$custom-dark: #000000;

JSON

{
  "hex": "#403ba3",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 163
  },
  "hsl": {
    "h": 242.885,
    "s": 46.847,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42329,
    "c": 0.16222,
    "h": 279
  },
  "luminance": 0.06862
}

Semantic roles & 50–950 ramp

primary

#403BA3

secondary

#BABD7D

accent

#D651D0

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403BA3

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

Preview Lab → · Contrast checker → · Palette generator →