#42497C#42497C

#42497C is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.4% C 0.085 H 276.2°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#42497C
RGB	rgb(66, 73, 124)
HSL	hsl(233, 31%, 37%)
HSV	hsv(233, 47%, 49%)
CMYK	cmyk(46.8%, 41.1%, 0%, 51.4%)
CIE-LAB	lab(32.65, 11.82, -29.91)
CIE-LCH	lch(32.65, 32.16, 291.56°)
OKLab	oklab(42.38% 0.0092 -0.0844)
OKLCH	oklch(42.38% 0.085 276.2)
XYZ	xyz(8.2663, 7.3781, 20.0534)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42497C #7C7542

analogous

#42667C #42497C #58427C

triadic

#42497C #7C4249 #497C42

tetradic

#42497C #7C4266 #7C7542 #427C58

square

#42497C #7C4266 #7C7542 #427C58

split-complementary

#42497C #7C5842 #667C42

monochromatic

#171A2C #2D3154 #42497C #5761A4 #7E85BA

Accessibility & contrast

On white

8.48

#42497C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#42497C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42497C

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42497C	#FFFFFF	#000000	##FFFFFF
##42497C	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364F7E

Deuteranopia (green-blind)

#324B7B

Tritanopia (blue-blind)

#2E535C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #42497c;
/* rgb */ color: rgb(66, 73, 124);
/* oklch */ color: oklch(42.4% 0.085 276.2);

Tailwind

colors: {
  custom: {
    50: '#7a7ba2',
    500: '#42497c',
    950: '#000000',
  },
}

SCSS

$custom: #42497c;
$custom-light: #7a7ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#42497c",
  "rgb": {
    "r": 66,
    "g": 73,
    "b": 124
  },
  "hsl": {
    "h": 232.759,
    "s": 30.526,
    "l": 37.255
  },
  "oklch": {
    "l": 0.42384,
    "c": 0.08488,
    "h": 276.2
  },
  "luminance": 0.07379
}

Semantic roles & 50–950 ramp

primary

#42497C

secondary

#A59F75

accent

#BA61C7

background

#F7F7FA

surface

#EEEDF3

border

#C9C8CD

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #42497C

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

Preview Lab → · Contrast checker → · Palette generator →