#42457D#42457D

#42457D is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.6% C 0.092 H 279.2°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#42457D
RGB	rgb(66, 69, 125)
HSL	hsl(237, 31%, 37%)
HSV	hsv(237, 47%, 49%)
CMYK	cmyk(47.2%, 44.8%, 0%, 51%)
CIE-LAB	lab(31.57, 14.78, -32.25)
CIE-LCH	lch(31.57, 35.48, 294.62°)
OKLab	oklab(41.57% 0.0149 -0.0912)
OKLCH	oklch(41.57% 0.092 279.2)
XYZ	xyz(8.0754, 6.8948, 20.3034)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42457D #7D7A42

analogous

#42637D #42457D #5C427D

triadic

#42457D #7D4245 #457D42

tetradic

#42457D #7D4263 #7D7A42 #427D5C

square

#42457D #7D4263 #7D7A42 #427D5C

split-complementary

#42457D #7D5C42 #637D42

monochromatic

#18192D #2D2F55 #42457D #575BA5 #7E81BB

Accessibility & contrast

On white

8.83

#42457D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#42457D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42457D

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42457D	#FFFFFF	#000000	##FFFFFF
##42457D	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4D7F

Deuteranopia (green-blind)

#2B487C

Tritanopia (blue-blind)

#2E515B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #42457d;
/* rgb */ color: rgb(66, 69, 125);
/* oklch */ color: oklch(41.6% 0.092 279.2);

Tailwind

colors: {
  custom: {
    50: '#7a78a3',
    500: '#42457d',
    950: '#000000',
  },
}

SCSS

$custom: #42457d;
$custom-light: #7a78a3;
$custom-dark: #000000;

JSON

{
  "hex": "#42457d",
  "rgb": {
    "r": 66,
    "g": 69,
    "b": 125
  },
  "hsl": {
    "h": 236.949,
    "s": 30.89,
    "l": 37.451
  },
  "oklch": {
    "l": 0.41572,
    "c": 0.09245,
    "h": 279.2
  },
  "luminance": 0.06895
}

Semantic roles & 50–950 ramp

primary

#42457D

secondary

#A6A375

accent

#C261C7

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#09090F

muted

#7B7B7F

Preview Lab

Preview with #42457D

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

Preview Lab → · Contrast checker → · Palette generator →