#42517A#42517A

#42517A is a dark, moderate blue. Relative luminance 0.084; OKLCH L 44.1% C 0.071 H 268.1°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#42517A
RGB	rgb(66, 81, 122)
HSL	hsl(224, 30%, 37%)
HSV	hsv(224, 46%, 48%)
CMYK	cmyk(45.9%, 33.6%, 0%, 52.2%)
CIE-LAB	lab(34.90, 5.95, -25.13)
CIE-LCH	lch(34.90, 25.83, 283.33°)
OKLab	oklab(44.08% -0.0023 -0.0705)
OKLCH	oklch(44.08% 0.071 268.1)
XYZ	xyz(8.7009, 8.4478, 19.5807)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42517A #7A6B42

analogous

#426D7A #42517A #4F427A

triadic

#42517A #7A4251 #517A42

tetradic

#42517A #7A426D #7A6B42 #427A4F

square

#42517A #7A426D #7A6B42 #427A4F

split-complementary

#42517A #7A4F42 #6D7A42

monochromatic

#171C2B #2D3752 #42517A #576BA2 #7D8DB9

Accessibility & contrast

On white

7.81

#42517A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#42517A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42517A

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42517A	#FFFFFF	#000000	##FFFFFF
##42517A	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#42557C

Deuteranopia (green-blind)

#3D5079

Tritanopia (blue-blind)

#2E5960

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #42517a;
/* rgb */ color: rgb(66, 81, 122);
/* oklch */ color: oklch(44.1% 0.071 268.1);

Tailwind

colors: {
  custom: {
    50: '#7981a0',
    500: '#42517a',
    950: '#000000',
  },
}

SCSS

$custom: #42517a;
$custom-light: #7981a0;
$custom-dark: #000000;

JSON

{
  "hex": "#42517a",
  "rgb": {
    "r": 66,
    "g": 81,
    "b": 122
  },
  "hsl": {
    "h": 223.929,
    "s": 29.787,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44082,
    "c": 0.07051,
    "h": 268.1
  },
  "luminance": 0.08448
}

Semantic roles & 50–950 ramp

primary

#42517A

secondary

#A49774

accent

#AB62C6

background

#F7F7F9

surface

#EEEEF2

border

#C9C9CC

text

#090A0F

muted

#7B7C7E

Preview Lab

Preview with #42517A

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

Preview Lab → · Contrast checker → · Palette generator →