#40338B#40338B

#40338B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.9% C 0.140 H 284.5°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#40338B
RGB	rgb(64, 51, 139)
HSL	hsl(249, 46%, 37%)
HSV	hsv(249, 63%, 55%)
CMYK	cmyk(54%, 63.3%, 0%, 45.5%)
CIE-LAB	lab(27.63, 30.66, -47.29)
CIE-LCH	lch(27.63, 56.36, 302.96°)
OKLab	oklab(38.9% 0.0352 -0.1356)
OKLCH	oklch(38.9% 0.14 284.5)
XYZ	xyz(7.9570, 5.3213, 25.0289)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40338B #7E8B33

analogous

#33528B #40338B #6C338B

triadic

#40338B #8B4033 #338B40

tetradic

#40338B #8B3352 #7E8B33 #338B6C

square

#40338B #8B3352 #7E8B33 #338B6C

split-complementary

#40338B #8B6C33 #528B33

monochromatic

#171231 #2B235E #40338B #5543B8 #7C6ECA

Accessibility & contrast

On white

10.17

#40338B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#40338B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40338B

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40338B	#FFFFFF	#000000	##FFFFFF
##40338B	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#22485A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #40338b;
/* rgb */ color: rgb(64, 51, 139);
/* oklch */ color: oklch(38.9% 0.140 284.5);

Tailwind

colors: {
  custom: {
    50: '#7c6bae',
    500: '#40338b',
    950: '#000000',
  },
}

SCSS

$custom: #40338b;
$custom-light: #7c6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#40338b",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 139
  },
  "hsl": {
    "h": 248.864,
    "s": 46.316,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38898,
    "c": 0.14008,
    "h": 284.5
  },
  "luminance": 0.05322
}

Semantic roles & 50–950 ramp

primary

#40338B

secondary

#A7B268

accent

#D652C2

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #40338B

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

Preview Lab → · Contrast checker → · Palette generator →