#42587D#42587D

#42587D is a mid, moderate blue. Relative luminance 0.096; OKLCH L 45.9% C 0.067 H 260.5°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#42587D
RGB	rgb(66, 88, 125)
HSL	hsl(218, 31%, 37%)
HSV	hsv(218, 47%, 49%)
CMYK	cmyk(47.2%, 29.6%, 0%, 51%)
CIE-LAB	lab(37.15, 2.44, -23.47)
CIE-LCH	lch(37.15, 23.60, 275.94°)
OKLab	oklab(45.88% -0.011 -0.0656)
OKLCH	oklch(45.88% 0.067 260.5)
XYZ	xyz(9.4370, 9.6178, 20.7572)
Luminance	0.0962 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42587D #7D6742

analogous

#42767D #42587D #49427D

triadic

#42587D #7D4258 #587D42

tetradic

#42587D #7D4276 #7D6742 #427D49

square

#42587D #7D4276 #7D6742 #427D49

split-complementary

#42587D #7D4942 #767D42

monochromatic

#18202D #2D3C55 #42587D #5774A5 #7E95BB

Accessibility & contrast

On white

7.18

#42587D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#42587D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42587D

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42587D	#FFFFFF	#000000	##FFFFFF
##42587D	1.00	7.18	2.92	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5A7F

Deuteranopia (green-blind)

#44557C

Tritanopia (blue-blind)

#2B6065

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #42587d;
/* rgb */ color: rgb(66, 88, 125);
/* oklch */ color: oklch(45.9% 0.067 260.5);

Tailwind

colors: {
  custom: {
    50: '#7987a3',
    500: '#42587d',
    950: '#000000',
  },
}

SCSS

$custom: #42587d;
$custom-light: #7987a3;
$custom-dark: #000000;

JSON

{
  "hex": "#42587d",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 125
  },
  "hsl": {
    "h": 217.627,
    "s": 30.89,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4588,
    "c": 0.06656,
    "h": 260.5
  },
  "luminance": 0.09618
}

Semantic roles & 50–950 ramp

primary

#42587D

secondary

#A69475

accent

#A161C7

background

#F7F8FA

surface

#EEEFF3

border

#C9CACD

text

#090B0F

muted

#7B7C7F

Preview Lab

Preview with #42587D

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

Preview Lab → · Contrast checker → · Palette generator →