#404B8D#404B8D

#404B8D is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.8% C 0.109 H 273.9°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#404B8D
RGB	rgb(64, 75, 141)
HSL	hsl(231, 38%, 40%)
HSV	hsv(231, 55%, 55%)
CMYK	cmyk(54.6%, 46.8%, 0%, 44.7%)
CIE-LAB	lab(34.08, 15.68, -38.14)
CIE-LCH	lch(34.08, 41.24, 292.35°)
OKLab	oklab(43.76% 0.0075 -0.1085)
OKLCH	oklch(43.76% 0.109 273.9)
XYZ	xyz(9.4366, 8.0446, 26.2496)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404B8D #8D8240

analogous

#40718D #404B8D #5C408D

triadic

#404B8D #8D404B #4B8D40

tetradic

#404B8D #8D4071 #8D8240 #408D5C

square

#404B8D #8D4071 #8D8240 #408D5C

split-complementary

#404B8D #8D5C40 #718D40

monochromatic

#1A1E39 #2D3563 #404B8D #5764B3 #818BC6

Accessibility & contrast

On white

8.05

#404B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#404B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404B8D

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404B8D	#FFFFFF	#000000	##FFFFFF
##404B8D	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E548F

Deuteranopia (green-blind)

#254D8C

Tritanopia (blue-blind)

#1C5965

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #404b8d;
/* rgb */ color: rgb(64, 75, 141);
/* oklch */ color: oklch(43.8% 0.109 273.9);

Tailwind

colors: {
  custom: {
    50: '#7b7daf',
    500: '#404b8d',
    950: '#000000',
  },
}

SCSS

$custom: #404b8d;
$custom-light: #7b7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#404b8d",
  "rgb": {
    "r": 64,
    "g": 75,
    "b": 141
  },
  "hsl": {
    "h": 231.429,
    "s": 37.561,
    "l": 40.196
  },
  "oklch": {
    "l": 0.43758,
    "c": 0.10877,
    "h": 273.9
  },
  "luminance": 0.08045
}

Semantic roles & 50–950 ramp

primary

#404B8D

secondary

#B0A878

accent

#BD5ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #404B8D

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

Preview Lab → · Contrast checker → · Palette generator →