#42339F#42339F

#42339F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.167 H 282.4°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#42339F
RGB	rgb(66, 51, 159)
HSL	hsl(248, 51%, 41%)
HSV	hsv(248, 68%, 62%)
CMYK	cmyk(58.5%, 67.9%, 0%, 37.6%)
CIE-LAB	lab(29.48, 37.50, -56.53)
CIE-LCH	lch(29.48, 67.83, 303.56°)
OKLab	oklab(40.81% 0.0359 -0.1627)
OKLCH	oklch(40.81% 0.167 282.4)
XYZ	xyz(9.6867, 6.0285, 33.4473)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.39

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42339F #909F33

analogous

#335A9F #42339F #78339F

triadic

#42339F #9F4233 #339F42

tetradic

#42339F #9F335A #909F33 #339F78

square

#42339F #9F335A #909F33 #339F78

split-complementary

#42339F #9F7833 #5A9F33

monochromatic

#1C1542 #2F2471 #42339F #5B4AC5 #8579D4

Accessibility & contrast

On white

9.52

#42339F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#42339F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42339F

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42339F	#FFFFFF	#000000	##FFFFFF
##42339F	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A2

Deuteranopia (green-blind)

#00429D

Tritanopia (blue-blind)

#0D4F64

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42339f;
/* rgb */ color: rgb(66, 51, 159);
/* oklch */ color: oklch(40.8% 0.167 282.4);

Tailwind

colors: {
  custom: {
    50: '#806cbc',
    500: '#42339f',
    950: '#000000',
  },
}

SCSS

$custom: #42339f;
$custom-light: #806cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#42339f",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 159
  },
  "hsl": {
    "h": 248.333,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.40809,
    "c": 0.16656,
    "h": 282.4
  },
  "luminance": 0.06029
}

Semantic roles & 50–950 ramp

primary

#42339F

secondary

#B2BC71

accent

#DB4DC7

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42339F

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

Preview Lab → · Contrast checker → · Palette generator →