#42339C#42339C

#42339C is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.163 H 282.9°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#42339C
RGB	rgb(66, 51, 156)
HSL	hsl(249, 51%, 41%)
HSV	hsv(249, 67%, 61%)
CMYK	cmyk(57.7%, 67.3%, 0%, 38.8%)
CIE-LAB	lab(29.22, 36.53, -55.13)
CIE-LCH	lch(29.22, 66.14, 303.53°)
OKLab	oklab(40.54% 0.0363 -0.1586)
OKLCH	oklch(40.54% 0.163 282.9)
XYZ	xyz(9.4295, 5.9256, 32.0929)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.78

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42339C #8D9C33

analogous

#33599C #42339C #76339C

triadic

#42339C #9C4233 #339C42

tetradic

#42339C #9C3359 #8D9C33 #339C76

square

#42339C #9C3359 #8D9C33 #339C76

split-complementary

#42339C #9C7633 #599C33

monochromatic

#1B1540 #2E246E #42339C #5A49C3 #8477D3

Accessibility & contrast

On white

9.61

#42339C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#42339C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42339C

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42339C	#FFFFFF	#000000	##FFFFFF
##42339C	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489F

Deuteranopia (green-blind)

#00419A

Tritanopia (blue-blind)

#134E63

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42339c;
/* rgb */ color: rgb(66, 51, 156);
/* oklch */ color: oklch(40.5% 0.163 282.9);

Tailwind

colors: {
  custom: {
    50: '#806cba',
    500: '#42339c',
    950: '#000000',
  },
}

SCSS

$custom: #42339c;
$custom-light: #806cba;
$custom-dark: #000000;

JSON

{
  "hex": "#42339c",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 156
  },
  "hsl": {
    "h": 248.571,
    "s": 50.725,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40541,
    "c": 0.16265,
    "h": 282.9
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#42339C

secondary

#B0BB70

accent

#DA4EC6

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42339C

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

Preview Lab → · Contrast checker → · Palette generator →