#404F8A#404F8A

#404F8A is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.4% C 0.099 H 271.2°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#404F8A
RGB	rgb(64, 79, 138)
HSL	hsl(228, 37%, 40%)
HSV	hsv(228, 54%, 54%)
CMYK	cmyk(53.6%, 42.8%, 0%, 45.9%)
CIE-LAB	lab(35.04, 12.03, -34.77)
CIE-LCH	lch(35.04, 36.80, 289.08°)
OKLab	oklab(44.43% 0.002 -0.0986)
OKLCH	oklch(44.43% 0.099 271.2)
XYZ	xyz(9.4963, 8.5163, 25.1832)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404F8A #8A7B40

analogous

#40748A #404F8A #56408A

triadic

#404F8A #8A404F #4F8A40

tetradic

#404F8A #8A4074 #8A7B40 #408A56

square

#404F8A #8A4074 #8A7B40 #408A56

split-complementary

#404F8A #8A5640 #748A40

monochromatic

#191F36 #2D3760 #404F8A #5669B1 #808EC4

Accessibility & contrast

On white

7.77

#404F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#404F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404F8A

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404F8A	#FFFFFF	#000000	##FFFFFF
##404F8A	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37568C

Deuteranopia (green-blind)

#2F4F89

Tritanopia (blue-blind)

#1E5C66

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #404f8a;
/* rgb */ color: rgb(64, 79, 138);
/* oklch */ color: oklch(44.4% 0.099 271.2);

Tailwind

colors: {
  custom: {
    50: '#7a80ac',
    500: '#404f8a',
    950: '#000000',
  },
}

SCSS

$custom: #404f8a;
$custom-light: #7a80ac;
$custom-dark: #000000;

JSON

{
  "hex": "#404f8a",
  "rgb": {
    "r": 64,
    "g": 79,
    "b": 138
  },
  "hsl": {
    "h": 227.838,
    "s": 36.634,
    "l": 39.608
  },
  "oklch": {
    "l": 0.44434,
    "c": 0.09863,
    "h": 271.2
  },
  "luminance": 0.08517
}

Semantic roles & 50–950 ramp

primary

#404F8A

secondary

#AFA377

accent

#B65BCD

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #404F8A

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

Preview Lab → · Contrast checker → · Palette generator →