#40309F#40309F

#40309F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.170 H 282.1°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#40309F
RGB	rgb(64, 48, 159)
HSL	hsl(249, 54%, 41%)
HSV	hsv(249, 70%, 62%)
CMYK	cmyk(59.7%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(28.66, 38.95, -57.88)
CIE-LCH	lch(28.66, 69.77, 303.94°)
OKLab	oklab(40.17% 0.0357 -0.1667)
OKLCH	oklch(40.17% 0.17 282.1)
XYZ	xyz(9.4274, 5.7065, 33.3988)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40309F #8F9F30

analogous

#30579F #40309F #77309F

triadic

#40309F #9F4030 #309F40

tetradic

#40309F #9F3057 #8F9F30 #309F77

square

#40309F #9F3057 #8F9F30 #309F77

split-complementary

#40309F #9F7730 #579F30

monochromatic

#1A1441 #2D2270 #40309F #5845C7 #8274D5

Accessibility & contrast

On white

9.81

#40309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#40309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40309F

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40309F	#FFFFFF	#000000	##FFFFFF
##40309F	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #40309f;
/* rgb */ color: rgb(64, 48, 159);
/* oklch */ color: oklch(40.2% 0.170 282.1);

Tailwind

colors: {
  custom: {
    50: '#806abc',
    500: '#40309f',
    950: '#000000',
  },
}

SCSS

$custom: #40309f;
$custom-light: #806abc;
$custom-dark: #000000;

JSON

{
  "hex": "#40309f",
  "rgb": {
    "r": 64,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 248.649,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40172,
    "c": 0.17047,
    "h": 282.1
  },
  "luminance": 0.05707
}

Semantic roles & 50–950 ramp

primary

#40309F

secondary

#B2BD6E

accent

#DD4BC8

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40309F

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

Preview Lab → · Contrast checker → · Palette generator →