#42589A#42589A

#42589A is a mid, moderate blue. Relative luminance 0.105; OKLCH L 47.6% C 0.110 H 268.2°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#42589A
RGB	rgb(66, 88, 154)
HSL	hsl(225, 40%, 43%)
HSV	hsv(225, 57%, 60%)
CMYK	cmyk(57.1%, 42.9%, 0%, 39.6%)
CIE-LAB	lab(38.67, 12.12, -38.68)
CIE-LCH	lch(38.67, 40.53, 287.40°)
OKLab	oklab(47.56% -0.0035 -0.1099)
OKLCH	oklch(47.56% 0.11 268.2)
XYZ	xyz(11.5673, 10.4699, 31.9769)
Luminance	0.1047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42589A #9A8442

analogous

#42849A #42589A #58429A

triadic

#42589A #9A4258 #589A42

tetradic

#42589A #9A4284 #9A8442 #429A58

square

#42589A #9A4284 #9A8442 #429A58

split-complementary

#42589A #9A5842 #849A42

monochromatic

#1D2744 #30406F #42589A #5F76BA #8A9ACD

Accessibility & contrast

On white

6.79

#42589A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#42589A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42589A

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42589A	#FFFFFF	#000000	##FFFFFF
##42589A	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5F9D

Deuteranopia (green-blind)

#315799

Tritanopia (blue-blind)

#0A6771

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #42589a;
/* rgb */ color: rgb(66, 88, 154);
/* oklch */ color: oklch(47.6% 0.110 268.2);

Tailwind

colors: {
  custom: {
    50: '#7d86b8',
    500: '#42589a',
    950: '#000000',
  },
}

SCSS

$custom: #42589a;
$custom-light: #7d86b8;
$custom-dark: #000000;

JSON

{
  "hex": "#42589a",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 154
  },
  "hsl": {
    "h": 225,
    "s": 40,
    "l": 43.137
  },
  "oklch": {
    "l": 0.47561,
    "c": 0.10997,
    "h": 268.2
  },
  "luminance": 0.10471
}

Semantic roles & 50–950 ramp

primary

#42589A

secondary

#B8AA80

accent

#B258D0

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #42589A

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

Preview Lab → · Contrast checker → · Palette generator →