#404C8D#404C8D

#404C8D is a dark, moderate blue. Relative luminance 0.082; OKLCH L 44.0% C 0.107 H 273.3°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#404C8D
RGB	rgb(64, 76, 141)
HSL	hsl(231, 38%, 40%)
HSV	hsv(231, 55%, 55%)
CMYK	cmyk(54.6%, 46.1%, 0%, 44.7%)
CIE-LAB	lab(34.36, 15.02, -37.69)
CIE-LCH	lch(34.36, 40.57, 291.73°)
OKLab	oklab(43.97% 0.0062 -0.1072)
OKLCH	oklch(43.97% 0.107 273.3)
XYZ	xyz(9.5050, 8.1813, 26.2724)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404C8D #8D8140

analogous

#40738D #404C8D #5A408D

triadic

#404C8D #8D404C #4C8D40

tetradic

#404C8D #8D4073 #8D8140 #408D5A

square

#404C8D #8D4073 #8D8140 #408D5A

split-complementary

#404C8D #8D5A40 #738D40

monochromatic

#1A1F39 #2D3563 #404C8D #5766B3 #818CC6

Accessibility & contrast

On white

7.97

#404C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#404C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404C8D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404C8D	#FFFFFF	#000000	##FFFFFF
##404C8D	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30548F

Deuteranopia (green-blind)

#274E8C

Tritanopia (blue-blind)

#1B5A65

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #404c8d;
/* rgb */ color: rgb(64, 76, 141);
/* oklch */ color: oklch(44.0% 0.107 273.3);

Tailwind

colors: {
  custom: {
    50: '#7b7daf',
    500: '#404c8d',
    950: '#000000',
  },
}

SCSS

$custom: #404c8d;
$custom-light: #7b7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#404c8d",
  "rgb": {
    "r": 64,
    "g": 76,
    "b": 141
  },
  "hsl": {
    "h": 230.649,
    "s": 37.561,
    "l": 40.196
  },
  "oklch": {
    "l": 0.43973,
    "c": 0.10736,
    "h": 273.3
  },
  "luminance": 0.08182
}

Semantic roles & 50–950 ramp

primary

#404C8D

secondary

#B0A878

accent

#BC5ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #404C8D

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

Preview Lab → · Contrast checker → · Palette generator →