#403F63#403F63

#403F63 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.061 H 284.4°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#403F63
RGB	rgb(64, 63, 99)
HSL	hsl(242, 22%, 32%)
HSV	hsv(242, 36%, 39%)
CMYK	cmyk(35.4%, 36.4%, 0%, 61.2%)
CIE-LAB	lab(28.24, 9.99, -21.06)
CIE-LCH	lch(28.24, 23.31, 295.37°)
OKLab	oklab(38.52% 0.0151 -0.0587)
OKLCH	oklch(38.52% 0.061 284.4)
XYZ	xyz(6.1434, 5.5457, 12.5487)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F63 #62633F

analogous

#3F5063 #403F63 #523F63

triadic

#403F63 #63403F #3F6340

tetradic

#403F63 #633F50 #62633F #3F6352

square

#403F63 #633F50 #62633F #3F6352

split-complementary

#403F63 #63523F #50633F

monochromatic

#100F18 #28273E #403F63 #585788 #7775A7

Accessibility & contrast

On white

9.96

#403F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#403F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F63

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F63	#FFFFFF	#000000	##FFFFFF
##403F63	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344464

Deuteranopia (green-blind)

#334262

Tritanopia (blue-blind)

#37464C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #403f63;
/* rgb */ color: rgb(64, 63, 99);
/* oklch */ color: oklch(38.5% 0.061 284.4);

Tailwind

colors: {
  custom: {
    50: '#76748f',
    500: '#403f63',
    950: '#000000',
  },
}

SCSS

$custom: #403f63;
$custom-light: #76748f;
$custom-dark: #000000;

JSON

{
  "hex": "#403f63",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 99
  },
  "hsl": {
    "h": 241.667,
    "s": 22.222,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38515,
    "c": 0.06067,
    "h": 284.4
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#403F63

secondary

#92936B

accent

#BF69BC

background

#F7F7F8

surface

#EDEDF0

border

#C8C8CB

text

#08080C

muted

#7B7B7D

Preview Lab

Preview with #403F63

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

Preview Lab → · Contrast checker → · Palette generator →