#42528E#42528E

#42528E is a mid, moderate blue. Relative luminance 0.091; OKLCH L 45.5% C 0.100 H 270.7°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#42528E
RGB	rgb(66, 82, 142)
HSL	hsl(227, 37%, 41%)
HSV	hsv(227, 54%, 56%)
CMYK	cmyk(53.5%, 42.3%, 0%, 44.3%)
CIE-LAB	lab(36.26, 11.91, -35.26)
CIE-LCH	lch(36.26, 37.22, 288.66°)
OKLab	oklab(45.49% 0.0013 -0.0999)
OKLCH	oklch(45.49% 0.1 270.7)
XYZ	xyz(10.1450, 9.1451, 26.8165)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42528E #8E7E42

analogous

#42788E #42528E #58428E

triadic

#42528E #8E4252 #528E42

tetradic

#42528E #8E4278 #8E7E42 #428E58

square

#42528E #8E4278 #8E7E42 #428E58

split-complementary

#42528E #8E5842 #788E42

monochromatic

#1B223A #2F3A64 #42528E #5B6DB3 #8492C6

Accessibility & contrast

On white

7.42

#42528E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#42528E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42528E

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42528E	#FFFFFF	#000000	##FFFFFF
##42528E	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5990

Deuteranopia (green-blind)

#31528D

Tritanopia (blue-blind)

#1F5F69

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #42528e;
/* rgb */ color: rgb(66, 82, 142);
/* oklch */ color: oklch(45.5% 0.100 270.7);

Tailwind

colors: {
  custom: {
    50: '#7c82af',
    500: '#42528e',
    950: '#000000',
  },
}

SCSS

$custom: #42528e;
$custom-light: #7c82af;
$custom-dark: #000000;

JSON

{
  "hex": "#42528e",
  "rgb": {
    "r": 66,
    "g": 82,
    "b": 142
  },
  "hsl": {
    "h": 227.368,
    "s": 36.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.45485,
    "c": 0.09996,
    "h": 270.7
  },
  "luminance": 0.09146
}

Semantic roles & 50–950 ramp

primary

#42528E

secondary

#B1A57B

accent

#B55BCD

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #42528E

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

Preview Lab → · Contrast checker → · Palette generator →