#42404E#42404E

#42404E is a dark, muted blue. Relative luminance 0.054; OKLCH L 37.9% C 0.024 H 291.8°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#42404E
RGB	rgb(66, 64, 78)
HSL	hsl(249, 10%, 28%)
HSV	hsv(249, 18%, 31%)
CMYK	cmyk(15.4%, 17.9%, 0%, 69.4%)
CIE-LAB	lab(27.78, 4.17, -8.14)
CIE-LCH	lch(27.78, 9.14, 297.13°)
OKLab	oklab(37.9% 0.0088 -0.0221)
OKLCH	oklch(37.9% 0.024 291.8)
XYZ	xyz(5.4550, 5.3751, 7.9564)
Luminance	0.0537 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42404E #4C4E40

analogous

#40454E #42404E #49404E

triadic

#42404E #4E4240 #404E42

tetradic

#42404E #4E4045 #4C4E40 #404E49

square

#42404E #4E4045 #4C4E40 #404E49

split-complementary

#42404E #4E4940 #454E40

monochromatic

#0E0E11 #26242C #42404E #5E5C70 #7C7890

Accessibility & contrast

On white

10.12

#42404E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#42404E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42404E

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42404E	#FFFFFF	#000000	##FFFFFF
##42404E	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D424F

Deuteranopia (green-blind)

#3D414E

Tritanopia (blue-blind)

#404245

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42404e;
/* rgb */ color: rgb(66, 64, 78);
/* oklch */ color: oklch(37.9% 0.024 291.8);

Tailwind

colors: {
  custom: {
    50: '#76747f',
    500: '#42404e',
    950: '#000000',
  },
}

SCSS

$custom: #42404e;
$custom-light: #76747f;
$custom-dark: #000000;

JSON

{
  "hex": "#42404e",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 78
  },
  "hsl": {
    "h": 248.571,
    "s": 9.859,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37895,
    "c": 0.02375,
    "h": 291.8
  },
  "luminance": 0.05375
}

Semantic roles & 50–950 ramp

primary

#42404E

secondary

#7B7D6D

accent

#B375AA

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #42404E

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

Preview Lab → · Contrast checker → · Palette generator →