#42557D#42557D

#42557D is a mid, moderate blue. Relative luminance 0.091; OKLCH L 45.2% C 0.070 H 264.3°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#42557D
RGB	rgb(66, 85, 125)
HSL	hsl(221, 31%, 37%)
HSV	hsv(221, 47%, 49%)
CMYK	cmyk(47.2%, 32%, 0%, 51%)
CIE-LAB	lab(36.24, 4.35, -24.88)
CIE-LCH	lch(36.24, 25.26, 279.91°)
OKLab	oklab(45.18% -0.0069 -0.0697)
OKLCH	oklch(45.18% 0.07 264.3)
XYZ	xyz(9.1957, 9.1354, 20.6768)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42557D #7D6A42

analogous

#42727D #42557D #4D427D

triadic

#42557D #7D4255 #557D42

tetradic

#42557D #7D4272 #7D6A42 #427D4D

square

#42557D #7D4272 #7D6A42 #427D4D

split-complementary

#42557D #7D4D42 #727D42

monochromatic

#181F2D #2D3A55 #42557D #5770A5 #7E92BB

Accessibility & contrast

On white

7.43

#42557D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#42557D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42557D

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42557D	#FFFFFF	#000000	##FFFFFF
##42557D	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46587F

Deuteranopia (green-blind)

#40537C

Tritanopia (blue-blind)

#2C5D63

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #42557d;
/* rgb */ color: rgb(66, 85, 125);
/* oklch */ color: oklch(45.2% 0.070 264.3);

Tailwind

colors: {
  custom: {
    50: '#7984a3',
    500: '#42557d',
    950: '#000000',
  },
}

SCSS

$custom: #42557d;
$custom-light: #7984a3;
$custom-dark: #000000;

JSON

{
  "hex": "#42557d",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 125
  },
  "hsl": {
    "h": 220.678,
    "s": 30.89,
    "l": 37.451
  },
  "oklch": {
    "l": 0.45176,
    "c": 0.07007,
    "h": 264.3
  },
  "luminance": 0.09136
}

Semantic roles & 50–950 ramp

primary

#42557D

secondary

#A69675

accent

#A661C7

background

#F7F8FA

surface

#EEEFF3

border

#C9CACD

text

#090A0F

muted

#7B7C7F

Preview Lab

Preview with #42557D

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

Preview Lab → · Contrast checker → · Palette generator →