#403BA6#403BA6

#403BA6 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.166 H 278.7°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#403BA6
RGB	rgb(64, 59, 166)
HSL	hsl(243, 48%, 44%)
HSV	hsv(243, 64%, 65%)
CMYK	cmyk(61.4%, 64.5%, 0%, 34.9%)
CIE-LAB	lab(31.74, 34.59, -57.08)
CIE-LCH	lch(31.74, 66.74, 301.22°)
OKLab	oklab(42.59% 0.0252 -0.1643)
OKLCH	oklch(42.59% 0.166 278.7)
XYZ	xyz(10.5591, 6.9703, 36.8580)
Luminance	0.0697 (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

#403BA6 #A1A63B

analogous

#3B6CA6 #403BA6 #763BA6

triadic

#403BA6 #A6403B #3BA640

tetradic

#403BA6 #A63B6C #A1A63B #3BA676

square

#403BA6 #A63B6C #A1A63B #3BA676

split-complementary

#403BA6 #A6763B #6CA63B

monochromatic

#1D1B4C #2F2B79 #403BA6 #5F5AC4 #8B87D4

Accessibility & contrast

On white

8.77

#403BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#403BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BA6

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BA6	#FFFFFF	#000000	##FFFFFF
##403BA6	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)

#004FA9

Deuteranopia (green-blind)

#0046A4

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ba6;
/* rgb */ color: rgb(64, 59, 166);
/* oklch */ color: oklch(42.6% 0.166 278.7);

Tailwind

colors: {
  custom: {
    50: '#8071c1',
    500: '#403ba6',
    950: '#000000',
  },
}

SCSS

$custom: #403ba6;
$custom-light: #8071c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ba6",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 166
  },
  "hsl": {
    "h": 242.804,
    "s": 47.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42589,
    "c": 0.16625,
    "h": 278.7
  },
  "luminance": 0.06971
}

Semantic roles & 50–950 ramp

primary

#403BA6

secondary

#BCBF7E

accent

#D751D1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403BA6

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

Preview Lab → · Contrast checker → · Palette generator →