#40339E#40339E

#40339E is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.166 H 281.6°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#40339E
RGB	rgb(64, 51, 158)
HSL	hsl(247, 51%, 41%)
HSV	hsv(247, 68%, 62%)
CMYK	cmyk(59.5%, 67.7%, 0%, 38%)
CIE-LAB	lab(29.22, 36.85, -56.35)
CIE-LCH	lch(29.22, 67.33, 303.18°)
OKLab	oklab(40.55% 0.0332 -0.1622)
OKLCH	oklch(40.55% 0.166 281.6)
XYZ	xyz(9.4678, 5.9256, 32.9860)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.62

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40339E #919E33

analogous

#335B9E #40339E #75339E

triadic

#40339E #9E4033 #339E40

tetradic

#40339E #9E335B #919E33 #339E75

square

#40339E #9E335B #919E33 #339E75

split-complementary

#40339E #9E7533 #5B9E33

monochromatic

#1B1541 #2D2470 #40339E #594AC4 #8378D3

Accessibility & contrast

On white

9.61

#40339E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#40339E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40339E

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40339E	#FFFFFF	#000000	##FFFFFF
##40339E	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#024F64

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #40339e;
/* rgb */ color: rgb(64, 51, 158);
/* oklch */ color: oklch(40.6% 0.166 281.6);

Tailwind

colors: {
  custom: {
    50: '#7f6cbc',
    500: '#40339e',
    950: '#000000',
  },
}

SCSS

$custom: #40339e;
$custom-light: #7f6cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#40339e",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 158
  },
  "hsl": {
    "h": 247.29,
    "s": 51.196,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40551,
    "c": 0.16558,
    "h": 281.6
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#40339E

secondary

#B3BC71

accent

#DB4DC9

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #40339E

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

Preview Lab → · Contrast checker → · Palette generator →