#42559C#42559C

#42559C is a mid, moderate blue. Relative luminance 0.101; OKLCH L 47.0% C 0.117 H 270.1°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#42559C
RGB	rgb(66, 85, 156)
HSL	hsl(227, 41%, 44%)
HSV	hsv(227, 58%, 61%)
CMYK	cmyk(57.7%, 45.5%, 0%, 38.8%)
CIE-LAB	lab(37.94, 14.75, -41.04)
CIE-LCH	lch(37.94, 43.62, 289.77°)
OKLab	oklab(47.04% 0.0003 -0.1169)
OKLCH	oklch(47.04% 0.117 270.1)
XYZ	xyz(11.4940, 10.0547, 32.7811)
Luminance	0.1006 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42559C #9C8942

analogous

#42829C #42559C #5C429C

triadic

#42559C #9C4255 #559C42

tetradic

#42559C #9C4282 #9C8942 #429C5C

square

#42559C #9C4282 #9C8942 #429C5C

split-complementary

#42559C #9C5C42 #829C42

monochromatic

#1E2646 #303E71 #42559C #6073BC #8B99CE

Accessibility & contrast

On white

6.97

#42559C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#42559C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42559C

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42559C	#FFFFFF	#000000	##FFFFFF
##42559C	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355D9F

Deuteranopia (green-blind)

#29569A

Tritanopia (blue-blind)

#076571

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #42559c;
/* rgb */ color: rgb(66, 85, 156);
/* oklch */ color: oklch(47.0% 0.117 270.1);

Tailwind

colors: {
  custom: {
    50: '#7e84ba',
    500: '#42559c',
    950: '#000000',
  },
}

SCSS

$custom: #42559c;
$custom-light: #7e84ba;
$custom-dark: #000000;

JSON

{
  "hex": "#42559c",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 156
  },
  "hsl": {
    "h": 227.333,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.47038,
    "c": 0.11689,
    "h": 270.1
  },
  "luminance": 0.10056
}

Semantic roles & 50–950 ramp

primary

#42559C

secondary

#B9AD81

accent

#B757D0

background

#F8F8FB

surface

#EFEFF6

border

#CACAD0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #42559C

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

Preview Lab → · Contrast checker → · Palette generator →