#42559E#42559E

#42559E is a mid, moderate blue. Relative luminance 0.101; OKLCH L 47.2% C 0.120 H 270.3°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#42559E
RGB	rgb(66, 85, 158)
HSL	hsl(228, 41%, 44%)
HSV	hsv(228, 58%, 62%)
CMYK	cmyk(58.2%, 46.2%, 0%, 38%)
CIE-LAB	lab(38.06, 15.45, -42.05)
CIE-LCH	lch(38.06, 44.80, 290.17°)
OKLab	oklab(47.17% 0.0006 -0.1198)
OKLCH	oklch(47.17% 0.12 270.3)
XYZ	xyz(11.6648, 10.1230, 33.6804)
Luminance	0.1012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42559E #9E8B42

analogous

#42839E #42559E #5D429E

triadic

#42559E #9E4255 #559E42

tetradic

#42559E #9E4283 #9E8B42 #429E5D

square

#42559E #9E4283 #9E8B42 #429E5D

split-complementary

#42559E #9E5D42 #839E42

monochromatic

#1E2748 #303E73 #42559E #6074BD #8C99CF

Accessibility & contrast

On white

6.94

#42559E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#42559E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42559E

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42559E	#FFFFFF	#000000	##FFFFFF
##42559E	1.00	6.94	3.02	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA1

Deuteranopia (green-blind)

#27569C

Tritanopia (blue-blind)

#016572

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #42559e;
/* rgb */ color: rgb(66, 85, 158);
/* oklch */ color: oklch(47.2% 0.120 270.3);

Tailwind

colors: {
  custom: {
    50: '#7e84bb',
    500: '#42559e',
    950: '#000000',
  },
}

SCSS

$custom: #42559e;
$custom-light: #7e84bb;
$custom-dark: #000000;

JSON

{
  "hex": "#42559e",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 158
  },
  "hsl": {
    "h": 227.609,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.4717,
    "c": 0.11984,
    "h": 270.3
  },
  "luminance": 0.10124
}

Semantic roles & 50–950 ramp

primary

#42559E

secondary

#BAAE82

accent

#B857D1

background

#F8F8FB

surface

#EFEFF6

border

#CACAD0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #42559E

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

Preview Lab → · Contrast checker → · Palette generator →