#404C8A#404C8A

#404C8A is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.8% C 0.103 H 273.2°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#404C8A
RGB	rgb(64, 76, 138)
HSL	hsl(230, 37%, 40%)
HSV	hsv(230, 54%, 54%)
CMYK	cmyk(53.6%, 44.9%, 0%, 45.9%)
CIE-LAB	lab(34.18, 14.00, -36.14)
CIE-LCH	lch(34.18, 38.76, 291.17°)
OKLab	oklab(43.78% 0.0057 -0.1026)
OKLCH	oklch(43.78% 0.103 273.2)
XYZ	xyz(9.2848, 8.0932, 25.1127)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404C8A #8A7E40

analogous

#40718A #404C8A #59408A

triadic

#404C8A #8A404C #4C8A40

tetradic

#404C8A #8A4071 #8A7E40 #408A59

square

#404C8A #8A4071 #8A7E40 #408A59

split-complementary

#404C8A #8A5940 #718A40

monochromatic

#191E36 #2D3560 #404C8A #5665B1 #808BC4

Accessibility & contrast

On white

8.02

#404C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#404C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404C8A

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404C8A	#FFFFFF	#000000	##FFFFFF
##404C8A	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32548C

Deuteranopia (green-blind)

#2A4D89

Tritanopia (blue-blind)

#1F5964

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #404c8a;
/* rgb */ color: rgb(64, 76, 138);
/* oklch */ color: oklch(43.8% 0.103 273.2);

Tailwind

colors: {
  custom: {
    50: '#7a7dac',
    500: '#404c8a',
    950: '#000000',
  },
}

SCSS

$custom: #404c8a;
$custom-light: #7a7dac;
$custom-dark: #000000;

JSON

{
  "hex": "#404c8a",
  "rgb": {
    "r": 64,
    "g": 76,
    "b": 138
  },
  "hsl": {
    "h": 230.27,
    "s": 36.634,
    "l": 39.608
  },
  "oklch": {
    "l": 0.43776,
    "c": 0.1028,
    "h": 273.2
  },
  "luminance": 0.08094
}

Semantic roles & 50–950 ramp

primary

#404C8A

secondary

#AFA677

accent

#BA5BCD

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #404C8A

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

Preview Lab → · Contrast checker → · Palette generator →