#40508B#40508B

#40508B is a dark, moderate blue. Relative luminance 0.087; OKLCH L 44.7% C 0.099 H 270.6°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#40508B
RGB	rgb(64, 80, 139)
HSL	hsl(227, 37%, 40%)
HSV	hsv(227, 54%, 55%)
CMYK	cmyk(54%, 42.4%, 0%, 45.5%)
CIE-LAB	lab(35.38, 11.72, -34.84)
CIE-LCH	lch(35.38, 36.75, 288.59°)
OKLab	oklab(44.72% 0.001 -0.0988)
OKLCH	oklch(44.72% 0.099 270.6)
XYZ	xyz(9.6417, 8.6907, 25.5905)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40508B #8B7B40

analogous

#40768B #40508B #56408B

triadic

#40508B #8B4050 #508B40

tetradic

#40508B #8B4076 #8B7B40 #408B56

square

#40508B #8B4076 #8B7B40 #408B56

split-complementary

#40508B #8B5640 #768B40

monochromatic

#192037 #2D3861 #40508B #576AB2 #818FC5

Accessibility & contrast

On white

7.67

#40508B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#40508B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40508B

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40508B	#FFFFFF	#000000	##FFFFFF
##40508B	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578D

Deuteranopia (green-blind)

#30508A

Tritanopia (blue-blind)

#1D5D66

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #40508b;
/* rgb */ color: rgb(64, 80, 139);
/* oklch */ color: oklch(44.7% 0.099 270.6);

Tailwind

colors: {
  custom: {
    50: '#7a80ad',
    500: '#40508b',
    950: '#000000',
  },
}

SCSS

$custom: #40508b;
$custom-light: #7a80ad;
$custom-dark: #000000;

JSON

{
  "hex": "#40508b",
  "rgb": {
    "r": 64,
    "g": 80,
    "b": 139
  },
  "hsl": {
    "h": 227.2,
    "s": 36.946,
    "l": 39.804
  },
  "oklch": {
    "l": 0.44718,
    "c": 0.09878,
    "h": 270.6
  },
  "luminance": 0.08691
}

Semantic roles & 50–950 ramp

primary

#40508B

secondary

#AFA378

accent

#B55BCD

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #40508B

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

Preview Lab → · Contrast checker → · Palette generator →