#42589E#42589E

#42589E is a mid, moderate blue. Relative luminance 0.106; OKLCH L 47.8% C 0.116 H 268.6°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#42589E
RGB	rgb(66, 88, 158)
HSL	hsl(226, 41%, 44%)
HSV	hsv(226, 58%, 62%)
CMYK	cmyk(58.2%, 44.3%, 0%, 38%)
CIE-LAB	lab(38.91, 13.50, -40.70)
CIE-LCH	lch(38.91, 42.88, 288.36°)
OKLab	oklab(47.82% -0.0028 -0.1158)
OKLCH	oklch(47.82% 0.116 268.6)
XYZ	xyz(11.9060, 10.6054, 33.7608)
Luminance	0.1061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42589E #9E8842

analogous

#42869E #42589E #5A429E

triadic

#42589E #9E4258 #589E42

tetradic

#42589E #9E4286 #9E8842 #429E5A

square

#42589E #9E4286 #9E8842 #429E5A

split-complementary

#42589E #9E5A42 #869E42

monochromatic

#1E2848 #304073 #42589E #6077BD #8C9CCF

Accessibility & contrast

On white

6.73

#42589E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#42589E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42589E

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42589E	#FFFFFF	#000000	##FFFFFF
##42589E	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3960A1

Deuteranopia (green-blind)

#2D589D

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #42589e;
/* rgb */ color: rgb(66, 88, 158);
/* oklch */ color: oklch(47.8% 0.116 268.6);

Tailwind

colors: {
  custom: {
    50: '#7e86bb',
    500: '#42589e',
    950: '#000000',
  },
}

SCSS

$custom: #42589e;
$custom-light: #7e86bb;
$custom-dark: #000000;

JSON

{
  "hex": "#42589e",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 158
  },
  "hsl": {
    "h": 225.652,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.47817,
    "c": 0.11587,
    "h": 268.6
  },
  "luminance": 0.10606
}

Semantic roles & 50–950 ramp

primary

#42589E

secondary

#BAAC82

accent

#B457D1

background

#F8F8FB

surface

#EFEFF6

border

#CACAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #42589E

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

Preview Lab → · Contrast checker → · Palette generator →