#42597B#42597B

#42597B is a mid, moderate blue. Relative luminance 0.097; OKLCH L 46.0% C 0.063 H 258.0°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#42597B
RGB	rgb(66, 89, 123)
HSL	hsl(216, 30%, 37%)
HSV	hsv(216, 46%, 48%)
CMYK	cmyk(46.3%, 27.6%, 0%, 51.8%)
CIE-LAB	lab(37.36, 1.18, -21.92)
CIE-LCH	lch(37.36, 21.95, 273.07°)
OKLab	oklab(46.01% -0.013 -0.0612)
OKLCH	oklch(46.01% 0.063 258)
XYZ	xyz(9.3931, 9.7325, 20.1187)
Luminance	0.0973 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42597B #7B6442

analogous

#42767B #42597B #47427B

triadic

#42597B #7B4259 #597B42

tetradic

#42597B #7B4276 #7B6442 #427B47

square

#42597B #7B4276 #7B6442 #427B47

split-complementary

#42597B #7B4742 #767B42

monochromatic

#171F2B #2D3C53 #42597B #5776A3 #7E96BA

Accessibility & contrast

On white

7.13

#42597B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#42597B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42597B

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42597B	#FFFFFF	#000000	##FFFFFF
##42597B	1.00	7.13	2.95	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5B7D

Deuteranopia (green-blind)

#46557A

Tritanopia (blue-blind)

#2C6065

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #42597b;
/* rgb */ color: rgb(66, 89, 123);
/* oklch */ color: oklch(46.0% 0.063 258.0);

Tailwind

colors: {
  custom: {
    50: '#7987a1',
    500: '#42597b',
    950: '#000000',
  },
}

SCSS

$custom: #42597b;
$custom-light: #7987a1;
$custom-dark: #000000;

JSON

{
  "hex": "#42597b",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 123
  },
  "hsl": {
    "h": 215.789,
    "s": 30.159,
    "l": 37.059
  },
  "oklch": {
    "l": 0.46014,
    "c": 0.06254,
    "h": 258
  },
  "luminance": 0.09733
}

Semantic roles & 50–950 ramp

primary

#42597B

secondary

#A59174

accent

#9E61C6

background

#F7F8F9

surface

#EEEFF2

border

#C9CACC

text

#090B0F

muted

#7B7C7E

Preview Lab

Preview with #42597B

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

Preview Lab → · Contrast checker → · Palette generator →