#42387E#42387E

#42387E is a dark, moderate blue. Relative luminance 0.055; OKLCH L 39.0% C 0.114 H 286.4°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#42387E
RGB	rgb(66, 56, 126)
HSL	hsl(249, 38%, 36%)
HSV	hsv(249, 56%, 49%)
CMYK	cmyk(47.6%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(28.09, 23.69, -38.42)
CIE-LCH	lch(28.09, 45.14, 301.65°)
OKLab	oklab(38.98% 0.0322 -0.1094)
OKLCH	oklch(38.98% 0.114 286.4)
XYZ	xyz(7.4257, 5.4926, 20.4035)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42387E #747E38

analogous

#38517E #42387E #65387E

triadic

#42387E #7E4238 #387E42

tetradic

#42387E #7E3851 #747E38 #387E65

square

#42387E #7E3851 #747E38 #387E65

split-complementary

#42387E #7E6538 #517E38

monochromatic

#161229 #2C2554 #42387E #584BA8 #7C71C0

Accessibility & contrast

On white

10.01

#42387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#42387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42387E

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42387E	#FFFFFF	#000000	##FFFFFF
##42387E	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144480

Deuteranopia (green-blind)

#13407C

Tritanopia (blue-blind)

#2F4755

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42387e;
/* rgb */ color: rgb(66, 56, 126);
/* oklch */ color: oklch(39.0% 0.114 286.4);

Tailwind

colors: {
  custom: {
    50: '#7b6fa4',
    500: '#42387e',
    950: '#000000',
  },
}

SCSS

$custom: #42387e;
$custom-light: #7b6fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#42387e",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 248.571,
    "s": 38.462,
    "l": 35.686
  },
  "oklch": {
    "l": 0.38978,
    "c": 0.11406,
    "h": 286.4
  },
  "luminance": 0.05493
}

Semantic roles & 50–950 ramp

primary

#42387E

secondary

#A0A969

accent

#CE59BE

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42387E

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

Preview Lab → · Contrast checker → · Palette generator →