#42339D#42339D

#42339D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.164 H 282.7°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#42339D
RGB	rgb(66, 51, 157)
HSL	hsl(248, 51%, 41%)
HSV	hsv(248, 68%, 62%)
CMYK	cmyk(58%, 67.5%, 0%, 38.4%)
CIE-LAB	lab(29.31, 36.86, -55.60)
CIE-LCH	lch(29.31, 66.70, 303.54°)
OKLab	oklab(40.63% 0.0361 -0.1599)
OKLCH	oklch(40.63% 0.164 282.7)
XYZ	xyz(9.5145, 5.9596, 32.5407)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42339D #8E9D33

analogous

#33599D #42339D #77339D

triadic

#42339D #9D4233 #339D42

tetradic

#42339D #9D3359 #8E9D33 #339D77

square

#42339D #9D3359 #8E9D33 #339D77

split-complementary

#42339D #9D7733 #599D33

monochromatic

#1B1541 #2F246F #42339D #5B49C4 #8477D3

Accessibility & contrast

On white

9.58

#42339D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#42339D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42339D

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42339D	#FFFFFF	#000000	##FFFFFF
##42339D	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#00419B

Tritanopia (blue-blind)

#114E63

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42339d;
/* rgb */ color: rgb(66, 51, 157);
/* oklch */ color: oklch(40.6% 0.164 282.7);

Tailwind

colors: {
  custom: {
    50: '#806cbb',
    500: '#42339d',
    950: '#000000',
  },
}

SCSS

$custom: #42339d;
$custom-light: #806cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#42339d",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 157
  },
  "hsl": {
    "h": 248.491,
    "s": 50.962,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4063,
    "c": 0.16396,
    "h": 282.7
  },
  "luminance": 0.0596
}

Semantic roles & 50–950 ramp

primary

#42339D

secondary

#B1BB70

accent

#DA4DC6

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42339D

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

Preview Lab → · Contrast checker → · Palette generator →