#403F87#403F87

#403F87 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.8% C 0.117 H 280.5°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#403F87
RGB	rgb(64, 63, 135)
HSL	hsl(241, 36%, 39%)
HSV	hsv(241, 53%, 53%)
CMYK	cmyk(52.6%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(30.39, 21.57, -40.36)
CIE-LCH	lch(30.39, 45.76, 298.12°)
OKLab	oklab(40.84% 0.0213 -0.1151)
OKLCH	oklch(40.84% 0.117 280.5)
XYZ	xyz(8.2637, 6.3938, 23.7157)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F87 #86873F

analogous

#3F6287 #403F87 #643F87

triadic

#403F87 #87403F #3F8740

tetradic

#403F87 #873F62 #86873F #3F8764

square

#403F87 #873F62 #86873F #3F8764

split-complementary

#403F87 #87643F #62873F

monochromatic

#181834 #2C2C5D #403F87 #5554AF #7F7EC3

Accessibility & contrast

On white

9.22

#403F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#403F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F87

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F87	#FFFFFF	#000000	##FFFFFF
##403F87	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4A8A

Deuteranopia (green-blind)

#134585

Tritanopia (blue-blind)

#244F5C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403f87;
/* rgb */ color: rgb(64, 63, 135);
/* oklch */ color: oklch(40.8% 0.117 280.5);

Tailwind

colors: {
  custom: {
    50: '#7a74aa',
    500: '#403f87',
    950: '#000000',
  },
}

SCSS

$custom: #403f87;
$custom-light: #7a74aa;
$custom-dark: #000000;

JSON

{
  "hex": "#403f87",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 240.833,
    "s": 36.364,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40844,
    "c": 0.1171,
    "h": 280.5
  },
  "luminance": 0.06394
}

Semantic roles & 50–950 ramp

primary

#403F87

secondary

#ACAD75

accent

#CC5BCB

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403F87

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

Preview Lab → · Contrast checker → · Palette generator →