#42309D#42309D

#42309D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.168 H 283.4°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#42309D
RGB	rgb(66, 48, 157)
HSL	hsl(250, 53%, 40%)
HSV	hsv(250, 69%, 62%)
CMYK	cmyk(58%, 69.4%, 0%, 38.4%)
CIE-LAB	lab(28.66, 38.63, -56.66)
CIE-LCH	lch(28.66, 68.58, 304.29°)
OKLab	oklab(40.16% 0.0388 -0.1631)
OKLCH	oklch(40.16% 0.168 283.4)
XYZ	xyz(9.3877, 5.7059, 32.4984)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42309D #8B9D30

analogous

#30559D #42309D #78309D

triadic

#42309D #9D4230 #309D42

tetradic

#42309D #9D3055 #8B9D30 #309D78

square

#42309D #9D3055 #8B9D30 #309D78

split-complementary

#42309D #9D7830 #559D30

monochromatic

#1B133F #2E226E #42309D #5A44C6 #8373D4

Accessibility & contrast

On white

9.81

#42309D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#42309D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42309D

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42309D	#FFFFFF	#000000	##FFFFFF
##42309D	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A0

Deuteranopia (green-blind)

#00409B

Tritanopia (blue-blind)

#124C62

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #42309d;
/* rgb */ color: rgb(66, 48, 157);
/* oklch */ color: oklch(40.2% 0.168 283.4);

Tailwind

colors: {
  custom: {
    50: '#806abb',
    500: '#42309d',
    950: '#000000',
  },
}

SCSS

$custom: #42309d;
$custom-light: #806abb;
$custom-dark: #000000;

JSON

{
  "hex": "#42309d",
  "rgb": {
    "r": 66,
    "g": 48,
    "b": 157
  },
  "hsl": {
    "h": 249.908,
    "s": 53.171,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4016,
    "c": 0.16762,
    "h": 283.4
  },
  "luminance": 0.05706
}

Semantic roles & 50–950 ramp

primary

#42309D

secondary

#AFBC6D

accent

#DD4BC5

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #42309D

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

Preview Lab → · Contrast checker → · Palette generator →