#403F55#403F55

#403F55 is a dark, muted blue. Relative luminance 0.053; OKLCH L 37.8% C 0.037 H 286.5°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#403F55
RGB	rgb(64, 63, 85)
HSL	hsl(243, 15%, 29%)
HSV	hsv(243, 26%, 33%)
CMYK	cmyk(24.7%, 25.9%, 0%, 66.7%)
CIE-LAB	lab(27.58, 5.94, -13.03)
CIE-LCH	lch(27.58, 14.31, 294.50°)
OKLab	oklab(37.79% 0.0106 -0.0358)
OKLCH	oklch(37.79% 0.037 286.5)
XYZ	xyz(5.5312, 5.3008, 9.3243)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F55 #54553F

analogous

#3F4955 #403F55 #4B3F55

triadic

#403F55 #55403F #3F5540

tetradic

#403F55 #553F49 #54553F #3F554B

square

#403F55 #553F49 #54553F #3F554B

split-complementary

#403F55 #554B3F #49553F

monochromatic

#0D0D12 #262532 #403F55 #5A5978 #777599

Accessibility & contrast

On white

10.19

#403F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#403F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F55

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F55	#FFFFFF	#000000	##FFFFFF
##403F55	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394256

Deuteranopia (green-blind)

#394154

Tritanopia (blue-blind)

#3B4347

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #403f55;
/* rgb */ color: rgb(64, 63, 85);
/* oklch */ color: oklch(37.8% 0.037 286.5);

Tailwind

colors: {
  custom: {
    50: '#757485',
    500: '#403f55',
    950: '#000000',
  },
}

SCSS

$custom: #403f55;
$custom-light: #757485;
$custom-dark: #000000;

JSON

{
  "hex": "#403f55",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 85
  },
  "hsl": {
    "h": 242.727,
    "s": 14.865,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37787,
    "c": 0.03733,
    "h": 286.5
  },
  "luminance": 0.05301
}

Semantic roles & 50–950 ramp

primary

#403F55

secondary

#83846B

accent

#B870B4

background

#F7F7F8

surface

#EDEDEF

border

#C8C8CA

text

#08080B

muted

#7B7B7C

Preview Lab

Preview with #403F55

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

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