#42437F#42437F

#42437F is a dark, moderate blue. Relative luminance 0.067; OKLCH L 41.3% C 0.099 H 280.4°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#42437F
RGB	rgb(66, 67, 127)
HSL	hsl(239, 32%, 38%)
HSV	hsv(239, 48%, 50%)
CMYK	cmyk(48%, 47.2%, 0%, 50.2%)
CIE-LAB	lab(31.12, 16.76, -34.20)
CIE-LCH	lch(31.12, 38.09, 296.11°)
OKLab	oklab(41.28% 0.0179 -0.097)
OKLCH	oklch(41.28% 0.099 280.4)
XYZ	xyz(8.0835, 6.7045, 20.9427)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42437F #7F7E42

analogous

#42627F #42437F #5F427F

triadic

#42437F #7F4243 #437F42

tetradic

#42437F #7F4262 #7F7E42 #427F5F

square

#42437F #7F4262 #7F7E42 #427F5F

split-complementary

#42437F #7F5F42 #627F42

monochromatic

#18192E #2D2E57 #42437F #5758A7 #7F80BC

Accessibility & contrast

On white

8.97

#42437F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#42437F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42437F

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42437F	#FFFFFF	#000000	##FFFFFF
##42437F	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4C81

Deuteranopia (green-blind)

#27477E

Tritanopia (blue-blind)

#2D505B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #42437f;
/* rgb */ color: rgb(66, 67, 127);
/* oklch */ color: oklch(41.3% 0.099 280.4);

Tailwind

colors: {
  custom: {
    50: '#7a77a4',
    500: '#42437f',
    950: '#000000',
  },
}

SCSS

$custom: #42437f;
$custom-light: #7a77a4;
$custom-dark: #000000;

JSON

{
  "hex": "#42437f",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 127
  },
  "hsl": {
    "h": 239.016,
    "s": 31.606,
    "l": 37.843
  },
  "oklch": {
    "l": 0.41276,
    "c": 0.09859,
    "h": 280.4
  },
  "luminance": 0.06705
}

Semantic roles & 50–950 ramp

primary

#42437F

secondary

#A7A675

accent

#C660C8

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #42437F

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

Preview Lab → · Contrast checker → · Palette generator →