#42407B#42407B

#42407B is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.4% C 0.097 H 282.7°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#42407B
RGB	rgb(66, 64, 123)
HSL	hsl(242, 32%, 37%)
HSV	hsv(242, 48%, 48%)
CMYK	cmyk(46.3%, 48%, 0%, 51.8%)
CIE-LAB	lab(30.05, 17.44, -33.42)
CIE-LCH	lch(30.05, 37.70, 297.56°)
OKLab	oklab(40.38% 0.0213 -0.0947)
OKLCH	oklch(40.38% 0.097 282.7)
XYZ	xyz(7.6543, 6.2548, 19.5390)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42407B #797B40

analogous

#405C7B #42407B #60407B

triadic

#42407B #7B4240 #407B42

tetradic

#42407B #7B405C #797B40 #407B60

square

#42407B #7B405C #797B40 #407B60

split-complementary

#42407B #7B6040 #5C7B40

monochromatic

#17162A #2C2B53 #42407B #5855A3 #7D7BBA

Accessibility & contrast

On white

9.33

#42407B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#42407B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42407B

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42407B	#FFFFFF	#000000	##FFFFFF
##42407B	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28497D

Deuteranopia (green-blind)

#26457A

Tritanopia (blue-blind)

#304C57

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42407b;
/* rgb */ color: rgb(66, 64, 123);
/* oklch */ color: oklch(40.4% 0.097 282.7);

Tailwind

colors: {
  custom: {
    50: '#7a74a1',
    500: '#42407b',
    950: '#000000',
  },
}

SCSS

$custom: #42407b;
$custom-light: #7a74a1;
$custom-dark: #000000;

JSON

{
  "hex": "#42407b",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 123
  },
  "hsl": {
    "h": 242.034,
    "s": 31.551,
    "l": 36.667
  },
  "oklch": {
    "l": 0.4038,
    "c": 0.09707,
    "h": 282.7
  },
  "luminance": 0.06255
}

Semantic roles & 50–950 ramp

primary

#42407B

secondary

#A3A572

accent

#C860C4

background

#F7F7FA

surface

#EEEDF3

border

#C9C8CD

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #42407B

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

Preview Lab → · Contrast checker → · Palette generator →