#40398D#40398D

#40398D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.135 H 282.2°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#40398D
RGB	rgb(64, 57, 141)
HSL	hsl(245, 42%, 39%)
HSV	hsv(245, 60%, 55%)
CMYK	cmyk(54.6%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(29.26, 27.50, -45.89)
CIE-LCH	lch(29.26, 53.50, 300.93°)
OKLab	oklab(40.14% 0.0285 -0.1314)
OKLCH	oklch(40.14% 0.135 282.2)
XYZ	xyz(8.3837, 5.9388, 25.8987)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40398D #868D39

analogous

#395C8D #40398D #6A398D

triadic

#40398D #8D4039 #398D40

tetradic

#40398D #8D395C #868D39 #398D6A

square

#40398D #8D395C #868D39 #398D6A

split-complementary

#40398D #8D6A39 #5C8D39

monochromatic

#181636 #2C2761 #40398D #554CB7 #7F78C8

Accessibility & contrast

On white

9.60

#40398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#40398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40398D

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40398D	#FFFFFF	#000000	##FFFFFF
##40398D	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#1F4D5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #40398d;
/* rgb */ color: rgb(64, 57, 141);
/* oklch */ color: oklch(40.1% 0.135 282.2);

Tailwind

colors: {
  custom: {
    50: '#7c6faf',
    500: '#40398d',
    950: '#000000',
  },
}

SCSS

$custom: #40398d;
$custom-light: #7c6faf;
$custom-dark: #000000;

JSON

{
  "hex": "#40398d",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 245,
    "s": 42.424,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40142,
    "c": 0.1345,
    "h": 282.2
  },
  "luminance": 0.05939
}

Semantic roles & 50–950 ramp

primary

#40398D

secondary

#ACB270

accent

#D256C8

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #40398D

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

Preview Lab → · Contrast checker → · Palette generator →