#42517E#42517E

#42517E is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.3% C 0.077 H 269.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#42517E
RGB	rgb(66, 81, 126)
HSL	hsl(225, 31%, 38%)
HSV	hsv(225, 48%, 49%)
CMYK	cmyk(47.6%, 35.7%, 0%, 50.6%)
CIE-LAB	lab(35.10, 7.24, -27.29)
CIE-LCH	lch(35.10, 28.23, 284.87°)
OKLab	oklab(44.31% -0.0012 -0.0767)
OKLCH	oklch(44.31% 0.077 269.1)
XYZ	xyz(8.9539, 8.5490, 20.9129)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42517E #7E6F42

analogous

#426F7E #42517E #51427E

triadic

#42517E #7E4251 #517E42

tetradic

#42517E #7E426F #7E6F42 #427E51

square

#42517E #7E426F #7E6F42 #427E51

split-complementary

#42517E #7E5142 #6F7E42

monochromatic

#181D2E #2D3756 #42517E #576BA6 #7F8EBC

Accessibility & contrast

On white

7.75

#42517E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#42517E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42517E

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42517E	#FFFFFF	#000000	##FFFFFF
##42517E	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415580

Deuteranopia (green-blind)

#3B507D

Tritanopia (blue-blind)

#2C5A61

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #42517e;
/* rgb */ color: rgb(66, 81, 126);
/* oklch */ color: oklch(44.3% 0.077 269.1);

Tailwind

colors: {
  custom: {
    50: '#7a81a3',
    500: '#42517e',
    950: '#000000',
  },
}

SCSS

$custom: #42517e;
$custom-light: #7a81a3;
$custom-dark: #000000;

JSON

{
  "hex": "#42517e",
  "rgb": {
    "r": 66,
    "g": 81,
    "b": 126
  },
  "hsl": {
    "h": 225,
    "s": 31.25,
    "l": 37.647
  },
  "oklch": {
    "l": 0.44305,
    "c": 0.07673,
    "h": 269.1
  },
  "luminance": 0.08549
}

Semantic roles & 50–950 ramp

primary

#42517E

secondary

#A79A75

accent

#AE60C7

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#090A0F

muted

#7B7C7F

Preview Lab

Preview with #42517E

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

Preview Lab → · Contrast checker → · Palette generator →