#40339C#40339C

#40339C is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.4% C 0.163 H 281.9°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#40339C
RGB	rgb(64, 51, 156)
HSL	hsl(247, 51%, 41%)
HSV	hsv(247, 67%, 61%)
CMYK	cmyk(59%, 67.3%, 0%, 38.8%)
CIE-LAB	lab(29.05, 36.20, -55.42)
CIE-LCH	lch(29.05, 66.19, 303.15°)
OKLab	oklab(40.37% 0.0335 -0.1595)
OKLCH	oklch(40.37% 0.163 281.9)
XYZ	xyz(9.2971, 5.8573, 32.0867)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40339C #8F9C33

analogous

#335A9C #40339C #75339C

triadic

#40339C #9C4033 #339C40

tetradic

#40339C #9C335A #8F9C33 #339C75

square

#40339C #9C335A #8F9C33 #339C75

split-complementary

#40339C #9C7533 #5A9C33

monochromatic

#1A1540 #2D246E #40339C #5849C3 #8277D3

Accessibility & contrast

On white

9.67

#40339C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#40339C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40339C

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40339C	#FFFFFF	#000000	##FFFFFF
##40339C	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#084E63

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #40339c;
/* rgb */ color: rgb(64, 51, 156);
/* oklch */ color: oklch(40.4% 0.163 281.9);

Tailwind

colors: {
  custom: {
    50: '#7f6cba',
    500: '#40339c',
    950: '#000000',
  },
}

SCSS

$custom: #40339c;
$custom-light: #7f6cba;
$custom-dark: #000000;

JSON

{
  "hex": "#40339c",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 156
  },
  "hsl": {
    "h": 247.429,
    "s": 50.725,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40371,
    "c": 0.16296,
    "h": 281.9
  },
  "luminance": 0.05858
}

Semantic roles & 50–950 ramp

primary

#40339C

secondary

#B2BB70

accent

#DA4EC9

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #40339C

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

Preview Lab → · Contrast checker → · Palette generator →