#42589F#42589F

#42589F is a mid, moderate blue. Relative luminance 0.106; OKLCH L 47.9% C 0.117 H 268.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#42589F
RGB	rgb(66, 88, 159)
HSL	hsl(226, 41%, 44%)
HSV	hsv(226, 58%, 62%)
CMYK	cmyk(58.5%, 44.7%, 0%, 37.6%)
CIE-LAB	lab(38.97, 13.85, -41.20)
CIE-LCH	lch(38.97, 43.47, 288.58°)
OKLab	oklab(47.88% -0.0026 -0.1173)
OKLCH	oklch(47.88% 0.117 268.7)
XYZ	xyz(11.9924, 10.6400, 34.2159)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42589F #9F8942

analogous

#42879F #42589F #5B429F

triadic

#42589F #9F4258 #589F42

tetradic

#42589F #9F4287 #9F8942 #429F5B

square

#42589F #9F4287 #9F8942 #429F5B

split-complementary

#42589F #9F5B42 #879F42

monochromatic

#1E2849 #304074 #42589F #6177BD #8C9CCF

Accessibility & contrast

On white

6.71

#42589F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#42589F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42589F

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42589F	#FFFFFF	#000000	##FFFFFF
##42589F	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3860A2

Deuteranopia (green-blind)

#2C589D

Tritanopia (blue-blind)

#006874

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #42589f;
/* rgb */ color: rgb(66, 88, 159);
/* oklch */ color: oklch(47.9% 0.117 268.7);

Tailwind

colors: {
  custom: {
    50: '#7e86bc',
    500: '#42589f',
    950: '#000000',
  },
}

SCSS

$custom: #42589f;
$custom-light: #7e86bc;
$custom-dark: #000000;

JSON

{
  "hex": "#42589f",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 159
  },
  "hsl": {
    "h": 225.806,
    "s": 41.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.47882,
    "c": 0.11734,
    "h": 268.7
  },
  "luminance": 0.10641
}

Semantic roles & 50–950 ramp

primary

#42589F

secondary

#BAAD82

accent

#B457D1

background

#F8F8FB

surface

#EFEFF6

border

#CACAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #42589F

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

Preview Lab → · Contrast checker → · Palette generator →