#404F8D#404F8D

#404F8D is a dark, moderate blue. Relative luminance 0.086; OKLCH L 44.6% C 0.103 H 271.4°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#404F8D
RGB	rgb(64, 79, 141)
HSL	hsl(228, 38%, 40%)
HSV	hsv(228, 55%, 55%)
CMYK	cmyk(54.6%, 44%, 0%, 44.7%)
CIE-LAB	lab(35.21, 13.05, -36.33)
CIE-LCH	lch(35.21, 38.60, 289.76°)
OKLab	oklab(44.63% 0.0026 -0.1032)
OKLCH	oklch(44.63% 0.103 271.4)
XYZ	xyz(9.7165, 8.6044, 26.3429)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404F8D #8D7E40

analogous

#40758D #404F8D #58408D

triadic

#404F8D #8D404F #4F8D40

tetradic

#404F8D #8D4075 #8D7E40 #408D58

square

#404F8D #8D4075 #8D7E40 #408D58

split-complementary

#404F8D #8D5840 #758D40

monochromatic

#1A2039 #2D3763 #404F8D #5769B3 #818FC6

Accessibility & contrast

On white

7.72

#404F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#404F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404F8D

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404F8D	#FFFFFF	#000000	##FFFFFF
##404F8D	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35568F

Deuteranopia (green-blind)

#2C508C

Tritanopia (blue-blind)

#1B5C67

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #404f8d;
/* rgb */ color: rgb(64, 79, 141);
/* oklch */ color: oklch(44.6% 0.103 271.4);

Tailwind

colors: {
  custom: {
    50: '#7b80af',
    500: '#404f8d',
    950: '#000000',
  },
}

SCSS

$custom: #404f8d;
$custom-light: #7b80af;
$custom-dark: #000000;

JSON

{
  "hex": "#404f8d",
  "rgb": {
    "r": 64,
    "g": 79,
    "b": 141
  },
  "hsl": {
    "h": 228.312,
    "s": 37.561,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44625,
    "c": 0.10319,
    "h": 271.4
  },
  "luminance": 0.08605
}

Semantic roles & 50–950 ramp

primary

#404F8D

secondary

#B0A678

accent

#B75ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #404F8D

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

Preview Lab → · Contrast checker → · Palette generator →