#42589C#42589C

#42589C is a mid, moderate blue. Relative luminance 0.105; OKLCH L 47.7% C 0.113 H 268.4°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#42589C
RGB	rgb(66, 88, 156)
HSL	hsl(225, 41%, 44%)
HSV	hsv(225, 58%, 61%)
CMYK	cmyk(57.7%, 43.6%, 0%, 38.8%)
CIE-LAB	lab(38.79, 12.81, -39.69)
CIE-LCH	lch(38.79, 41.71, 287.89°)
OKLab	oklab(47.69% -0.0031 -0.1129)
OKLCH	oklch(47.69% 0.113 268.4)
XYZ	xyz(11.7352, 10.5371, 32.8615)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42589C #9C8642

analogous

#42859C #42589C #59429C

triadic

#42589C #9C4258 #589C42

tetradic

#42589C #9C4285 #9C8642 #429C59

square

#42589C #9C4285 #9C8642 #429C59

split-complementary

#42589C #9C5942 #859C42

monochromatic

#1E2746 #304071 #42589C #6076BC #8B9BCE

Accessibility & contrast

On white

6.76

#42589C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#42589C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42589C

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42589C	#FFFFFF	#000000	##FFFFFF
##42589C	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A609F

Deuteranopia (green-blind)

#2F589B

Tritanopia (blue-blind)

#056772

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #42589c;
/* rgb */ color: rgb(66, 88, 156);
/* oklch */ color: oklch(47.7% 0.113 268.4);

Tailwind

colors: {
  custom: {
    50: '#7e86b9',
    500: '#42589c',
    950: '#000000',
  },
}

SCSS

$custom: #42589c;
$custom-light: #7e86b9;
$custom-dark: #000000;

JSON

{
  "hex": "#42589c",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 156
  },
  "hsl": {
    "h": 225.333,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.47688,
    "c": 0.11292,
    "h": 268.4
  },
  "luminance": 0.10538
}

Semantic roles & 50–950 ramp

primary

#42589C

secondary

#B9AB81

accent

#B357D0

background

#F8F8FB

surface

#EFEFF6

border

#CACAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #42589C

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

Preview Lab → · Contrast checker → · Palette generator →