#42597D#42597D

#42597D is a mid, moderate blue. Relative luminance 0.098; OKLCH L 46.1% C 0.065 H 259.1°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#42597D
RGB	rgb(66, 89, 125)
HSL	hsl(217, 31%, 37%)
HSV	hsv(217, 47%, 49%)
CMYK	cmyk(47.2%, 28.8%, 0%, 51%)
CIE-LAB	lab(37.45, 1.81, -23.00)
CIE-LCH	lch(37.45, 23.07, 274.50°)
OKLab	oklab(46.12% -0.0123 -0.0643)
OKLCH	oklch(46.12% 0.065 259.1)
XYZ	xyz(9.5196, 9.7831, 20.7848)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42597D #7D6642

analogous

#42777D #42597D #48427D

triadic

#42597D #7D4259 #597D42

tetradic

#42597D #7D4277 #7D6642 #427D48

square

#42597D #7D4277 #7D6642 #427D48

split-complementary

#42597D #7D4842 #777D42

monochromatic

#18202D #2D3C55 #42597D #5776A5 #7E96BB

Accessibility & contrast

On white

7.10

#42597D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#42597D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42597D

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42597D	#FFFFFF	#000000	##FFFFFF
##42597D	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5B7F

Deuteranopia (green-blind)

#45567C

Tritanopia (blue-blind)

#2B6166

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #42597d;
/* rgb */ color: rgb(66, 89, 125);
/* oklch */ color: oklch(46.1% 0.065 259.1);

Tailwind

colors: {
  custom: {
    50: '#7987a2',
    500: '#42597d',
    950: '#000000',
  },
}

SCSS

$custom: #42597d;
$custom-light: #7987a2;
$custom-dark: #000000;

JSON

{
  "hex": "#42597d",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 125
  },
  "hsl": {
    "h": 216.61,
    "s": 30.89,
    "l": 37.451
  },
  "oklch": {
    "l": 0.46117,
    "c": 0.06546,
    "h": 259.1
  },
  "luminance": 0.09784
}

Semantic roles & 50–950 ramp

primary

#42597D

secondary

#A69375

accent

#9F61C7

background

#F7F8FA

surface

#EEEFF3

border

#C9CACD

text

#090B0F

muted

#7B7C7F

Preview Lab

Preview with #42597D

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

Preview Lab → · Contrast checker → · Palette generator →