#40459B#40459B

#40459B is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.5% C 0.138 H 276.5°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#40459B
RGB	rgb(64, 69, 155)
HSL	hsl(237, 42%, 43%)
HSV	hsv(237, 59%, 61%)
CMYK	cmyk(58.7%, 55.5%, 0%, 39.2%)
CIE-LAB	lab(33.38, 24.44, -47.78)
CIE-LCH	lch(33.38, 53.67, 297.09°)
OKLab	oklab(43.53% 0.0157 -0.1369)
OKLCH	oklch(43.53% 0.138 276.5)
XYZ	xyz(10.1570, 7.7121, 31.9573)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40459B #9B9640

analogous

#40739B #40459B #68409B

triadic

#40459B #9B4045 #459B40

tetradic

#40459B #9B4073 #9B9640 #409B68

square

#40459B #9B4073 #9B9640 #409B68

split-complementary

#40459B #9B6840 #739B40

monochromatic

#1C1E44 #2E3270 #40459B #5C62BC #888CCE

Accessibility & contrast

On white

8.26

#40459B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#40459B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40459B

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40459B	#FFFFFF	#000000	##FFFFFF
##40459B	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B529E

Deuteranopia (green-blind)

#004B99

Tritanopia (blue-blind)

#045969

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #40459b;
/* rgb */ color: rgb(64, 69, 155);
/* oklch */ color: oklch(43.5% 0.138 276.5);

Tailwind

colors: {
  custom: {
    50: '#7d78b9',
    500: '#40459b',
    950: '#000000',
  },
}

SCSS

$custom: #40459b;
$custom-light: #7d78b9;
$custom-dark: #000000;

JSON

{
  "hex": "#40459b",
  "rgb": {
    "r": 64,
    "g": 69,
    "b": 155
  },
  "hsl": {
    "h": 236.703,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.4353,
    "c": 0.13781,
    "h": 276.5
  },
  "luminance": 0.07713
}

Semantic roles & 50–950 ramp

primary

#40459B

secondary

#B8B57E

accent

#CB56D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #40459B

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

Preview Lab → · Contrast checker → · Palette generator →