#42458E#42458E

#42458E is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.7% C 0.118 H 278.4°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#42458E
RGB	rgb(66, 69, 142)
HSL	hsl(238, 37%, 41%)
HSV	hsv(238, 54%, 56%)
CMYK	cmyk(53.5%, 51.4%, 0%, 44.3%)
CIE-LAB	lab(32.63, 20.43, -41.06)
CIE-LCH	lch(32.63, 45.86, 296.46°)
OKLab	oklab(42.72% 0.0172 -0.1171)
OKLCH	oklch(42.72% 0.118 278.4)
XYZ	xyz(9.2558, 7.3669, 26.5202)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42458E #8E8B42

analogous

#426B8E #42458E #65428E

triadic

#42458E #8E4245 #458E42

tetradic

#42458E #8E426B #8E8B42 #428E65

square

#42458E #8E426B #8E8B42 #428E65

split-complementary

#42458E #8E6542 #6B8E42

monochromatic

#1B1C3A #2F3164 #42458E #5B5EB3 #8487C6

Accessibility & contrast

On white

8.49

#42458E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#42458E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42458E

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42458E	#FFFFFF	#000000	##FFFFFF
##42458E	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215091

Deuteranopia (green-blind)

#194A8C

Tritanopia (blue-blind)

#215563

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #42458e;
/* rgb */ color: rgb(66, 69, 142);
/* oklch */ color: oklch(42.7% 0.118 278.4);

Tailwind

colors: {
  custom: {
    50: '#7c78af',
    500: '#42458e',
    950: '#000000',
  },
}

SCSS

$custom: #42458e;
$custom-light: #7c78af;
$custom-dark: #000000;

JSON

{
  "hex": "#42458e",
  "rgb": {
    "r": 66,
    "g": 69,
    "b": 142
  },
  "hsl": {
    "h": 237.632,
    "s": 36.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4272,
    "c": 0.11835,
    "h": 278.4
  },
  "luminance": 0.07367
}

Semantic roles & 50–950 ramp

primary

#42458E

secondary

#B1AF7B

accent

#C85BCD

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #42458E

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

Preview Lab → · Contrast checker → · Palette generator →