#42488E#42488E

#42488E is a dark, moderate blue. Relative luminance 0.077; OKLCH L 43.3% C 0.114 H 276.8°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#42488E
RGB	rgb(66, 72, 142)
HSL	hsl(235, 37%, 41%)
HSV	hsv(235, 54%, 56%)
CMYK	cmyk(53.5%, 49.3%, 0%, 44.3%)
CIE-LAB	lab(33.45, 18.46, -39.75)
CIE-LCH	lch(33.45, 43.83, 294.91°)
OKLab	oklab(43.34% 0.0136 -0.1132)
OKLCH	oklch(43.34% 0.114 276.8)
XYZ	xyz(9.4451, 7.7454, 26.5833)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42488E #8E8842

analogous

#426E8E #42488E #62428E

triadic

#42488E #8E4248 #488E42

tetradic

#42488E #8E426E #8E8842 #428E62

square

#42488E #8E426E #8E8842 #428E62

split-complementary

#42488E #8E6242 #6E8E42

monochromatic

#1B1E3A #2F3364 #42488E #5B62B3 #848AC6

Accessibility & contrast

On white

8.24

#42488E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#42488E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42488E

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42488E	#FFFFFF	#000000	##FFFFFF
##42488E	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285291

Deuteranopia (green-blind)

#204C8C

Tritanopia (blue-blind)

#215764

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #42488e;
/* rgb */ color: rgb(66, 72, 142);
/* oklch */ color: oklch(43.3% 0.114 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c7aaf',
    500: '#42488e',
    950: '#000000',
  },
}

SCSS

$custom: #42488e;
$custom-light: #7c7aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#42488e",
  "rgb": {
    "r": 66,
    "g": 72,
    "b": 142
  },
  "hsl": {
    "h": 235.263,
    "s": 36.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.43338,
    "c": 0.11402,
    "h": 276.8
  },
  "luminance": 0.07746
}

Semantic roles & 50–950 ramp

primary

#42488E

secondary

#B1AD7B

accent

#C45BCD

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #42488E

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

Preview Lab → · Contrast checker → · Palette generator →