#42497E#42497E

#42497E is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.5% C 0.088 H 276.3°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#42497E
RGB	rgb(66, 73, 126)
HSL	hsl(233, 31%, 38%)
HSV	hsv(233, 48%, 49%)
CMYK	cmyk(47.6%, 42.1%, 0%, 50.6%)
CIE-LAB	lab(32.76, 12.47, -30.97)
CIE-LCH	lch(32.76, 33.39, 291.93°)
OKLab	oklab(42.51% 0.0097 -0.0875)
OKLCH	oklch(42.51% 0.088 276.3)
XYZ	xyz(8.3940, 7.4293, 20.7263)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42497E #7E7742

analogous

#42677E #42497E #59427E

triadic

#42497E #7E4249 #497E42

tetradic

#42497E #7E4267 #7E7742 #427E59

square

#42497E #7E4267 #7E7742 #427E59

split-complementary

#42497E #7E5942 #677E42

monochromatic

#181A2E #2D3256 #42497E #5760A6 #7F86BC

Accessibility & contrast

On white

8.45

#42497E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#42497E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42497E

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42497E	#FFFFFF	#000000	##FFFFFF
##42497E	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355080

Deuteranopia (green-blind)

#304B7D

Tritanopia (blue-blind)

#2D545D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #42497e;
/* rgb */ color: rgb(66, 73, 126);
/* oklch */ color: oklch(42.5% 0.088 276.3);

Tailwind

colors: {
  custom: {
    50: '#7a7ba3',
    500: '#42497e',
    950: '#000000',
  },
}

SCSS

$custom: #42497e;
$custom-light: #7a7ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#42497e",
  "rgb": {
    "r": 66,
    "g": 73,
    "b": 126
  },
  "hsl": {
    "h": 233,
    "s": 31.25,
    "l": 37.647
  },
  "oklch": {
    "l": 0.42507,
    "c": 0.08802,
    "h": 276.3
  },
  "luminance": 0.0743
}

Semantic roles & 50–950 ramp

primary

#42497E

secondary

#A7A175

accent

#BB60C7

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #42497E

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

Preview Lab → · Contrast checker → · Palette generator →