#42587F#42587F

#42587F is a mid, moderate blue. Relative luminance 0.097; OKLCH L 46.0% C 0.070 H 261.4°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#42587F
RGB	rgb(66, 88, 127)
HSL	hsl(218, 32%, 38%)
HSV	hsv(218, 48%, 50%)
CMYK	cmyk(48%, 30.7%, 0%, 50.2%)
CIE-LAB	lab(37.24, 3.08, -24.55)
CIE-LCH	lch(37.24, 24.75, 277.16°)
OKLab	oklab(45.99% -0.0103 -0.0688)
OKLCH	oklch(45.99% 0.07 261.4)
XYZ	xyz(9.5660, 9.6694, 21.4369)
Luminance	0.0967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42587F #7F6942

analogous

#42767F #42587F #4B427F

triadic

#42587F #7F4258 #587F42

tetradic

#42587F #7F4276 #7F6942 #427F4B

square

#42587F #7F4276 #7F6942 #427F4B

split-complementary

#42587F #7F4B42 #767F42

monochromatic

#18202E #2D3C57 #42587F #5774A7 #7F95BC

Accessibility & contrast

On white

7.16

#42587F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#42587F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42587F

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42587F	#FFFFFF	#000000	##FFFFFF
##42587F	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495B81

Deuteranopia (green-blind)

#43557E

Tritanopia (blue-blind)

#2A6066

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #42587f;
/* rgb */ color: rgb(66, 88, 127);
/* oklch */ color: oklch(46.0% 0.070 261.4);

Tailwind

colors: {
  custom: {
    50: '#7a87a4',
    500: '#42587f',
    950: '#000000',
  },
}

SCSS

$custom: #42587f;
$custom-light: #7a87a4;
$custom-dark: #000000;

JSON

{
  "hex": "#42587f",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 127
  },
  "hsl": {
    "h": 218.361,
    "s": 31.606,
    "l": 37.843
  },
  "oklch": {
    "l": 0.45986,
    "c": 0.06953,
    "h": 261.4
  },
  "luminance": 0.0967
}

Semantic roles & 50–950 ramp

primary

#42587F

secondary

#A79575

accent

#A260C8

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#090B0F

muted

#7B7C7F

Preview Lab

Preview with #42587F

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

Preview Lab → · Contrast checker → · Palette generator →