#403F71#403F71

#403F71 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.3% C 0.083 H 282.8°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#403F71
RGB	rgb(64, 63, 113)
HSL	hsl(241, 28%, 35%)
HSV	hsv(241, 44%, 44%)
CMYK	cmyk(43.4%, 44.2%, 0%, 55.7%)
CIE-LAB	lab(29.00, 14.34, -28.80)
CIE-LCH	lch(29.00, 32.17, 296.47°)
OKLab	oklab(39.35% 0.0184 -0.0812)
OKLCH	oklch(39.35% 0.083 282.8)
XYZ	xyz(6.8716, 5.8370, 16.3842)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F71 #70713F

analogous

#3F5771 #403F71 #593F71

triadic

#403F71 #71403F #3F7140

tetradic

#403F71 #713F57 #70713F #3F7159

square

#403F71 #713F57 #70713F #3F7159

split-complementary

#403F71 #71593F #57713F

monochromatic

#131322 #2A294A #403F71 #565598 #7877B3

Accessibility & contrast

On white

9.69

#403F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#403F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F71

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F71	#FFFFFF	#000000	##FFFFFF
##403F71	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4673

Deuteranopia (green-blind)

#2B4370

Tritanopia (blue-blind)

#314952

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #403f71;
/* rgb */ color: rgb(64, 63, 113);
/* oklch */ color: oklch(39.3% 0.083 282.8);

Tailwind

colors: {
  custom: {
    50: '#77749a',
    500: '#403f71',
    950: '#000000',
  },
}

SCSS

$custom: #403f71;
$custom-light: #77749a;
$custom-dark: #000000;

JSON

{
  "hex": "#403f71",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 113
  },
  "hsl": {
    "h": 241.2,
    "s": 28.409,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39347,
    "c": 0.08329,
    "h": 282.8
  },
  "luminance": 0.05837
}

Semantic roles & 50–950 ramp

primary

#403F71

secondary

#9D9E6E

accent

#C563C3

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#09080E

muted

#7B7B7E

Preview Lab

Preview with #403F71

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

Preview Lab → · Contrast checker → · Palette generator →