#40439A#40439A

#40439A is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.139 H 277.3°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#40439A
RGB	rgb(64, 67, 154)
HSL	hsl(238, 41%, 43%)
HSV	hsv(238, 58%, 60%)
CMYK	cmyk(58.4%, 56.5%, 0%, 39.6%)
CIE-LAB	lab(32.78, 25.40, -48.14)
CIE-LCH	lch(32.78, 54.43, 297.82°)
OKLab	oklab(43.06% 0.0178 -0.138)
OKLCH	oklch(43.06% 0.139 277.3)
XYZ	xyz(9.9524, 7.4367, 31.4766)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40439A #9A9740

analogous

#40709A #40439A #6A409A

triadic

#40439A #9A4043 #439A40

tetradic

#40439A #9A4070 #9A9740 #409A6A

square

#40439A #9A4070 #9A9740 #409A6A

split-complementary

#40439A #9A6A40 #709A40

monochromatic

#1C1D44 #2E306F #40439A #5C5FBB #878ACD

Accessibility & contrast

On white

8.44

#40439A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#40439A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40439A

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40439A	#FFFFFF	#000000	##FFFFFF
##40439A	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02519D

Deuteranopia (green-blind)

#004998

Tritanopia (blue-blind)

#085768

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #40439a;
/* rgb */ color: rgb(64, 67, 154);
/* oklch */ color: oklch(43.1% 0.139 277.3);

Tailwind

colors: {
  custom: {
    50: '#7d77b8',
    500: '#40439a',
    950: '#000000',
  },
}

SCSS

$custom: #40439a;
$custom-light: #7d77b8;
$custom-dark: #000000;

JSON

{
  "hex": "#40439a",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 154
  },
  "hsl": {
    "h": 238,
    "s": 41.284,
    "l": 42.745
  },
  "oklch": {
    "l": 0.43063,
    "c": 0.13912,
    "h": 277.3
  },
  "luminance": 0.07437
}

Semantic roles & 50–950 ramp

primary

#40439A

secondary

#B8B67E

accent

#CD57D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #40439A

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

Preview Lab → · Contrast checker → · Palette generator →