#403F69#403F69

#403F69 is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.9% C 0.070 H 283.7°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#403F69
RGB	rgb(64, 63, 105)
HSL	hsl(241, 25%, 33%)
HSV	hsv(241, 40%, 41%)
CMYK	cmyk(39%, 40%, 0%, 58.8%)
CIE-LAB	lab(28.55, 11.82, -24.41)
CIE-LCH	lch(28.55, 27.12, 295.84°)
OKLab	oklab(38.86% 0.0167 -0.0685)
OKLCH	oklch(38.86% 0.07 283.7)
XYZ	xyz(6.4409, 5.6647, 14.1159)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F69 #68693F

analogous

#3F5369 #403F69 #553F69

triadic

#403F69 #69403F #3F6940

tetradic

#403F69 #693F53 #68693F #3F6955

square

#403F69 #693F53 #68693F #3F6955

split-complementary

#403F69 #69553F #53693F

monochromatic

#11111C #292843 #403F69 #57568F #7776AD

Accessibility & contrast

On white

9.85

#403F69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#403F69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F69

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F69	#FFFFFF	#000000	##FFFFFF
##403F69	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31456B

Deuteranopia (green-blind)

#304268

Tritanopia (blue-blind)

#35474F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #403f69;
/* rgb */ color: rgb(64, 63, 105);
/* oklch */ color: oklch(38.9% 0.070 283.7);

Tailwind

colors: {
  custom: {
    50: '#777494',
    500: '#403f69',
    950: '#000000',
  },
}

SCSS

$custom: #403f69;
$custom-light: #777494;
$custom-dark: #000000;

JSON

{
  "hex": "#403f69",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 105
  },
  "hsl": {
    "h": 241.429,
    "s": 25,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3886,
    "c": 0.07047,
    "h": 283.7
  },
  "luminance": 0.05665
}

Semantic roles & 50–950 ramp

primary

#403F69

secondary

#97986C

accent

#C166BF

background

#F7F7F9

surface

#EDEDF1

border

#C8C8CB

text

#09080D

muted

#7B7B7E

Preview Lab

Preview with #403F69

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

Preview Lab → · Contrast checker → · Palette generator →