#403BA8#403BA8

#403BA8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.169 H 278.5°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#403BA8
RGB	rgb(64, 59, 168)
HSL	hsl(243, 48%, 45%)
HSV	hsv(243, 65%, 66%)
CMYK	cmyk(61.9%, 64.9%, 0%, 34.1%)
CIE-LAB	lab(31.91, 35.26, -58.00)
CIE-LCH	lch(31.91, 67.88, 301.29°)
OKLab	oklab(42.76% 0.0251 -0.167)
OKLCH	oklch(42.76% 0.169 278.5)
XYZ	xyz(10.7439, 7.0443, 37.8317)
Luminance	0.0704 (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

#403BA8 #A3A83B

analogous

#3B6DA8 #403BA8 #773BA8

triadic

#403BA8 #A8403B #3BA840

tetradic

#403BA8 #A83B6D #A3A83B #3BA877

square

#403BA8 #A83B6D #A3A83B #3BA877

split-complementary

#403BA8 #A8773B #6DA83B

monochromatic

#1D1B4D #2F2B7B #403BA8 #605BC5 #8C88D5

Accessibility & contrast

On white

8.72

#403BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#403BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BA8

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BA8	#FFFFFF	#000000	##FFFFFF
##403BA8	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0047A6

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ba8;
/* rgb */ color: rgb(64, 59, 168);
/* oklch */ color: oklch(42.8% 0.169 278.5);

Tailwind

colors: {
  custom: {
    50: '#8071c3',
    500: '#403ba8',
    950: '#000000',
  },
}

SCSS

$custom: #403ba8;
$custom-light: #8071c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403ba8",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 168
  },
  "hsl": {
    "h": 242.752,
    "s": 48.018,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42764,
    "c": 0.16891,
    "h": 278.5
  },
  "luminance": 0.07045
}

Semantic roles & 50–950 ramp

primary

#403BA8

secondary

#BDC07F

accent

#D850D1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403BA8

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

Preview Lab → · Contrast checker → · Palette generator →