#42339A#42339A

#42339A is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.4% C 0.160 H 283.2°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#42339A
RGB	rgb(66, 51, 154)
HSL	hsl(249, 50%, 40%)
HSV	hsv(249, 67%, 60%)
CMYK	cmyk(57.1%, 66.9%, 0%, 39.6%)
CIE-LAB	lab(29.05, 35.89, -54.19)
CIE-LCH	lch(29.05, 65.00, 303.52°)
OKLab	oklab(40.36% 0.0365 -0.1558)
OKLCH	oklch(40.36% 0.16 283.2)
XYZ	xyz(9.2615, 5.8584, 31.2083)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42339A #8B9A33

analogous

#33579A #42339A #76339A

triadic

#42339A #9A4233 #339A42

tetradic

#42339A #9A3357 #8B9A33 #339A76

square

#42339A #9A3357 #8B9A33 #339A76

split-complementary

#42339A #9A7633 #579A33

monochromatic

#1B153E #2E246C #42339A #5A48C2 #8376D2

Accessibility & contrast

On white

9.67

#42339A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#42339A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42339A

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42339A	#FFFFFF	#000000	##FFFFFF
##42339A	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489D

Deuteranopia (green-blind)

#004198

Tritanopia (blue-blind)

#164D62

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #42339a;
/* rgb */ color: rgb(66, 51, 154);
/* oklch */ color: oklch(40.4% 0.160 283.2);

Tailwind

colors: {
  custom: {
    50: '#806cb9',
    500: '#42339a',
    950: '#000000',
  },
}

SCSS

$custom: #42339a;
$custom-light: #806cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#42339a",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 154
  },
  "hsl": {
    "h": 248.738,
    "s": 50.244,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40363,
    "c": 0.16002,
    "h": 283.2
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary

#42339A

secondary

#AFBA6F

accent

#DA4EC5

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #42339A

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

Preview Lab → · Contrast checker → · Palette generator →