#40517C#40517C

#40517C is a dark, moderate blue. Relative luminance 0.084; OKLCH L 44.1% C 0.074 H 266.9°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#40517C
RGB	rgb(64, 81, 124)
HSL	hsl(223, 32%, 37%)
HSV	hsv(223, 48%, 49%)
CMYK	cmyk(48.4%, 34.7%, 0%, 51.4%)
CIE-LAB	lab(34.86, 6.05, -26.44)
CIE-LCH	lch(34.86, 27.12, 282.89°)
OKLab	oklab(44.05% -0.004 -0.0743)
OKLCH	oklch(44.05% 0.074 266.9)
XYZ	xyz(8.6937, 8.4296, 20.2338)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40517C #7C6B40

analogous

#406F7C #40517C #4D407C

triadic

#40517C #7C4051 #517C40

tetradic

#40517C #7C406F #7C6B40 #407C4D

square

#40517C #7C406F #7C6B40 #407C4D

split-complementary

#40517C #7C4D40 #6F7C40

monochromatic

#161C2B #2B3754 #40517C #556BA4 #7B8DBB

Accessibility & contrast

On white

7.82

#40517C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#40517C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40517C

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40517C	#FFFFFF	#000000	##FFFFFF
##40517C	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41557E

Deuteranopia (green-blind)

#3B507B

Tritanopia (blue-blind)

#295A61

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #40517c;
/* rgb */ color: rgb(64, 81, 124);
/* oklch */ color: oklch(44.1% 0.074 266.9);

Tailwind

colors: {
  custom: {
    50: '#7881a2',
    500: '#40517c',
    950: '#000000',
  },
}

SCSS

$custom: #40517c;
$custom-light: #7881a2;
$custom-dark: #000000;

JSON

{
  "hex": "#40517c",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 124
  },
  "hsl": {
    "h": 223,
    "s": 31.915,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44051,
    "c": 0.0744,
    "h": 266.9
  },
  "luminance": 0.0843
}

Semantic roles & 50–950 ramp

primary

#40517C

secondary

#A69772

accent

#AB60C8

background

#F7F7FA

surface

#EDEEF3

border

#C8C9CD

text

#090A0F

muted

#7B7C7F

Preview Lab

Preview with #40517C

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

Preview Lab → · Contrast checker → · Palette generator →