#40397E#40397E

#40397E is a dark, moderate blue. Relative luminance 0.055; OKLCH L 39.0% C 0.113 H 284.5°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#40397E
RGB	rgb(64, 57, 126)
HSL	hsl(246, 38%, 36%)
HSV	hsv(246, 55%, 49%)
CMYK	cmyk(49.2%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(28.17, 22.54, -38.31)
CIE-LCH	lch(28.17, 44.45, 300.47°)
OKLab	oklab(38.99% 0.0282 -0.1091)
OKLCH	oklch(38.99% 0.113 284.5)
XYZ	xyz(7.3423, 5.5223, 20.4136)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40397E #777E39

analogous

#39547E #40397E #62397E

triadic

#40397E #7E4039 #397E40

tetradic

#40397E #7E3954 #777E39 #397E62

square

#40397E #7E3954 #777E39 #397E62

split-complementary

#40397E #7E6239 #547E39

monochromatic

#15132A #2B2654 #40397E #554CA8 #7A72BF

Accessibility & contrast

On white

9.98

#40397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#40397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40397E

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40397E	#FFFFFF	#000000	##FFFFFF
##40397E	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164580

Deuteranopia (green-blind)

#13407C

Tritanopia (blue-blind)

#2B4855

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #40397e;
/* rgb */ color: rgb(64, 57, 126);
/* oklch */ color: oklch(39.0% 0.113 284.5);

Tailwind

colors: {
  custom: {
    50: '#796fa4',
    500: '#40397e',
    950: '#000000',
  },
}

SCSS

$custom: #40397e;
$custom-light: #796fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#40397e",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 246.087,
    "s": 37.705,
    "l": 35.882
  },
  "oklch": {
    "l": 0.38992,
    "c": 0.11272,
    "h": 284.5
  },
  "luminance": 0.05523
}

Semantic roles & 50–950 ramp

primary

#40397E

secondary

#A2A86A

accent

#CE5AC2

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#09070F

muted

#7B7A7F

Preview Lab

Preview with #40397E

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

Preview Lab → · Contrast checker → · Palette generator →