#40459C#40459C

#40459C is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.6% C 0.139 H 276.5°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#40459C
RGB	rgb(64, 69, 156)
HSL	hsl(237, 42%, 43%)
HSV	hsv(237, 59%, 61%)
CMYK	cmyk(59%, 55.8%, 0%, 38.8%)
CIE-LAB	lab(33.45, 24.79, -48.27)
CIE-LCH	lch(33.45, 54.26, 297.18°)
OKLab	oklab(43.61% 0.0157 -0.1384)
OKLCH	oklch(43.61% 0.139 276.5)
XYZ	xyz(10.2413, 7.7458, 32.4015)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40459C #9C9740

analogous

#40739C #40459C #69409C

triadic

#40459C #9C4045 #459C40

tetradic

#40459C #9C4073 #9C9740 #409C69

square

#40459C #9C4073 #9C9740 #409C69

split-complementary

#40459C #9C6940 #739C40

monochromatic

#1C1F45 #2E3271 #40459C #5D62BC #888CCE

Accessibility & contrast

On white

8.24

#40459C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#40459C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40459C

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40459C	#FFFFFF	#000000	##FFFFFF
##40459C	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08539F

Deuteranopia (green-blind)

#004B9A

Tritanopia (blue-blind)

#015969

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #40459c;
/* rgb */ color: rgb(64, 69, 156);
/* oklch */ color: oklch(43.6% 0.139 276.5);

Tailwind

colors: {
  custom: {
    50: '#7e78ba',
    500: '#40459c',
    950: '#000000',
  },
}

SCSS

$custom: #40459c;
$custom-light: #7e78ba;
$custom-dark: #000000;

JSON

{
  "hex": "#40459c",
  "rgb": {
    "r": 64,
    "g": 69,
    "b": 156
  },
  "hsl": {
    "h": 236.739,
    "s": 41.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43606,
    "c": 0.13925,
    "h": 276.5
  },
  "luminance": 0.07747
}

Semantic roles & 50–950 ramp

primary

#40459C

secondary

#B9B67F

accent

#CB56D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #40459C

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

Preview Lab → · Contrast checker → · Palette generator →