#40396E#40396E

#40396E is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.9% C 0.088 H 287.5°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#40396E
RGB	rgb(64, 57, 110)
HSL	hsl(248, 32%, 33%)
HSV	hsv(248, 48%, 43%)
CMYK	cmyk(41.8%, 48.2%, 0%, 56.9%)
CIE-LAB	lab(27.14, 17.40, -29.84)
CIE-LCH	lch(27.14, 34.54, 300.24°)
OKLab	oklab(37.88% 0.0265 -0.0843)
OKLCH	oklch(37.88% 0.088 287.5)
XYZ	xyz(6.3912, 5.1418, 15.4046)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40396E #676E39

analogous

#394C6E #40396E #5B396E

triadic

#40396E #6E4039 #396E40

tetradic

#40396E #6E394C #676E39 #396E5B

square

#40396E #6E394C #676E39 #396E5B

split-complementary

#40396E #6E5B39 #4C6E39

monochromatic

#110F1D #292446 #40396E #574E96 #776EB4

Accessibility & contrast

On white

10.35

#40396E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#40396E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40396E

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40396E	#FFFFFF	#000000	##FFFFFF
##40396E	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254170

Deuteranopia (green-blind)

#253F6D

Tritanopia (blue-blind)

#33444E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40396e;
/* rgb */ color: rgb(64, 57, 110);
/* oklch */ color: oklch(37.9% 0.088 287.5);

Tailwind

colors: {
  custom: {
    50: '#776f98',
    500: '#40396e',
    950: '#000000',
  },
}

SCSS

$custom: #40396e;
$custom-light: #776f98;
$custom-dark: #000000;

JSON

{
  "hex": "#40396e",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 110
  },
  "hsl": {
    "h": 247.925,
    "s": 31.737,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37877,
    "c": 0.08838,
    "h": 287.5
  },
  "luminance": 0.05142
}

Semantic roles & 50–950 ramp

primary

#40396E

secondary

#969D65

accent

#C860BA

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#09070D

muted

#7B7A7E

Preview Lab

Preview with #40396E

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

Preview Lab → · Contrast checker → · Palette generator →