#40447F#40447F

#40447F is a dark, moderate blue. Relative luminance 0.068; OKLCH L 41.3% C 0.097 H 278.3°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#40447F
RGB	rgb(64, 68, 127)
HSL	hsl(236, 33%, 37%)
HSV	hsv(236, 50%, 50%)
CMYK	cmyk(49.6%, 46.5%, 0%, 50.2%)
CIE-LAB	lab(31.25, 15.58, -34.02)
CIE-LCH	lch(31.25, 37.42, 294.61°)
OKLab	oklab(41.33% 0.0141 -0.0965)
OKLCH	oklch(41.33% 0.097 278.3)
XYZ	xyz(8.0111, 6.7561, 20.9565)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40447F #7F7B40

analogous

#40647F #40447F #5B407F

triadic

#40447F #7F4044 #447F40

tetradic

#40447F #7F4064 #7F7B40 #407F5B

square

#40447F #7F4064 #7F7B40 #407F5B

split-complementary

#40447F #7F5B40 #647F40

monochromatic

#17182E #2B2E56 #40447F #555AA8 #7C80BD

Accessibility & contrast

On white

8.93

#40447F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#40447F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40447F

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40447F	#FFFFFF	#000000	##FFFFFF
##40447F	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4C81

Deuteranopia (green-blind)

#27477E

Tritanopia (blue-blind)

#29505B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #40447f;
/* rgb */ color: rgb(64, 68, 127);
/* oklch */ color: oklch(41.3% 0.097 278.3);

Tailwind

colors: {
  custom: {
    50: '#7977a4',
    500: '#40447f',
    950: '#000000',
  },
}

SCSS

$custom: #40447f;
$custom-light: #7977a4;
$custom-dark: #000000;

JSON

{
  "hex": "#40447f",
  "rgb": {
    "r": 64,
    "g": 68,
    "b": 127
  },
  "hsl": {
    "h": 236.19,
    "s": 32.984,
    "l": 37.451
  },
  "oklch": {
    "l": 0.41327,
    "c": 0.09749,
    "h": 278.3
  },
  "luminance": 0.06757
}

Semantic roles & 50–950 ramp

primary

#40447F

secondary

#A8A473

accent

#C25FC9

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #40447F

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

Preview Lab → · Contrast checker → · Palette generator →