#40439F#40439F

#40439F is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.5% C 0.146 H 277.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#40439F
RGB	rgb(64, 67, 159)
HSL	hsl(238, 43%, 44%)
HSV	hsv(238, 60%, 62%)
CMYK	cmyk(59.7%, 57.9%, 0%, 37.6%)
CIE-LAB	lab(33.15, 27.12, -50.57)
CIE-LCH	lch(33.15, 57.38, 298.21°)
OKLab	oklab(43.45% 0.0179 -0.1451)
OKLCH	oklch(43.45% 0.146 277)
XYZ	xyz(10.3775, 7.6067, 33.7156)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40439F #9F9C40

analogous

#40729F #40439F #6C409F

triadic

#40439F #9F4043 #439F40

tetradic

#40439F #9F4072 #9F9C40 #409F6C

square

#40439F #9F4072 #9F9C40 #409F6C

split-complementary

#40439F #9F6C40 #729F40

monochromatic

#1D1E48 #2E3173 #40439F #5E61BE #8A8CD0

Accessibility & contrast

On white

8.33

#40439F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#40439F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40439F

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40439F	#FFFFFF	#000000	##FFFFFF
##40439F	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A2

Deuteranopia (green-blind)

#004A9D

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #40439f;
/* rgb */ color: rgb(64, 67, 159);
/* oklch */ color: oklch(43.5% 0.146 277.0);

Tailwind

colors: {
  custom: {
    50: '#7e77bc',
    500: '#40439f',
    950: '#000000',
  },
}

SCSS

$custom: #40439f;
$custom-light: #7e77bc;
$custom-dark: #000000;

JSON

{
  "hex": "#40439f",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 159
  },
  "hsl": {
    "h": 238.105,
    "s": 42.601,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43454,
    "c": 0.14623,
    "h": 277
  },
  "luminance": 0.07608
}

Semantic roles & 50–950 ramp

primary

#40439F

secondary

#BBB980

accent

#CE55D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40439F

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

Preview Lab → · Contrast checker → · Palette generator →