#42404F#42404F

#42404F is a dark, muted blue. Relative luminance 0.054; OKLCH L 37.9% C 0.025 H 291.2°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#42404F
RGB	rgb(66, 64, 79)
HSL	hsl(248, 10%, 28%)
HSV	hsv(248, 19%, 31%)
CMYK	cmyk(16.5%, 19%, 0%, 69%)
CIE-LAB	lab(27.82, 4.42, -8.73)
CIE-LCH	lch(27.82, 9.79, 296.88°)
OKLab	oklab(37.94% 0.0092 -0.0237)
OKLCH	oklch(37.94% 0.025 291.2)
XYZ	xyz(5.4911, 5.3895, 8.1466)
Luminance	0.0539 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42404F #4D4F40

analogous

#40454F #42404F #49404F

triadic

#42404F #4F4240 #404F42

tetradic

#42404F #4F4045 #4D4F40 #404F49

square

#42404F #4F4045 #4D4F40 #404F49

split-complementary

#42404F #4F4940 #454F40

monochromatic

#0E0E11 #26252D #42404F #5E5B71 #7B7892

Accessibility & contrast

On white

10.11

#42404F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#42404F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42404F

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42404F	#FFFFFF	#000000	##FFFFFF
##42404F	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4250

Deuteranopia (green-blind)

#3D414F

Tritanopia (blue-blind)

#404245

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42404f;
/* rgb */ color: rgb(66, 64, 79);
/* oklch */ color: oklch(37.9% 0.025 291.2);

Tailwind

colors: {
  custom: {
    50: '#767480',
    500: '#42404f',
    950: '#000000',
  },
}

SCSS

$custom: #42404f;
$custom-light: #767480;
$custom-dark: #000000;

JSON

{
  "hex": "#42404f",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 79
  },
  "hsl": {
    "h": 248,
    "s": 10.49,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37939,
    "c": 0.02544,
    "h": 291.2
  },
  "luminance": 0.0539
}

Semantic roles & 50–950 ramp

primary

#42404F

secondary

#7C7E6D

accent

#B374AB

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #42404F

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

Preview Lab → · Contrast checker → · Palette generator →