#40309A#40309A

#40309A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.7% C 0.164 H 282.8°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#40309A
RGB	rgb(64, 48, 154)
HSL	hsl(249, 52%, 40%)
HSV	hsv(249, 69%, 60%)
CMYK	cmyk(58.4%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(28.21, 37.35, -55.57)
CIE-LCH	lch(28.21, 66.96, 303.90°)
OKLab	oklab(39.71% 0.0365 -0.1599)
OKLCH	oklch(39.71% 0.164 282.8)
XYZ	xyz(9.0022, 5.5364, 31.1598)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40309A #8A9A30

analogous

#30559A #40309A #75309A

triadic

#40309A #9A4030 #309A40

tetradic

#40309A #9A3055 #8A9A30 #309A75

square

#40309A #9A3055 #8A9A30 #309A75

split-complementary

#40309A #9A7530 #559A30

monochromatic

#19133D #2D216B #40309A #5643C4 #8072D3

Accessibility & contrast

On white

9.96

#40309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#40309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40309A

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40309A	#FFFFFF	#000000	##FFFFFF
##40309A	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469D

Deuteranopia (green-blind)

#003F98

Tritanopia (blue-blind)

#0E4B61

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #40309a;
/* rgb */ color: rgb(64, 48, 154);
/* oklch */ color: oklch(39.7% 0.164 282.8);

Tailwind

colors: {
  custom: {
    50: '#7f6ab9',
    500: '#40309a',
    950: '#000000',
  },
}

SCSS

$custom: #40309a;
$custom-light: #7f6ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#40309a",
  "rgb": {
    "r": 64,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 249.057,
    "s": 52.475,
    "l": 39.608
  },
  "oklch": {
    "l": 0.39712,
    "c": 0.16403,
    "h": 282.8
  },
  "luminance": 0.05537
}

Semantic roles & 50–950 ramp

primary

#40309A

secondary

#AFBB6B

accent

#DC4CC6

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40309A

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

Preview Lab → · Contrast checker → · Palette generator →