#42639E#42639E

#42639E is a mid, moderate blue. Relative luminance 0.126; OKLCH L 50.3% C 0.102 H 261.3°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#42639E
RGB	rgb(66, 99, 158)
HSL	hsl(218, 41%, 44%)
HSV	hsv(218, 58%, 62%)
CMYK	cmyk(58.2%, 37.3%, 0%, 38%)
CIE-LAB	lab(42.08, 6.48, -35.67)
CIE-LCH	lch(42.08, 36.25, 280.29°)
OKLab	oklab(50.26% -0.0155 -0.101)
OKLCH	oklch(50.26% 0.102 261.3)
XYZ	xyz(12.8780, 12.5495, 34.0848)
Luminance	0.1255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42639E #9E7D42

analogous

#42919E #42639E #4F429E

triadic

#42639E #9E4263 #639E42

tetradic

#42639E #9E4291 #9E7D42 #429E4F

square

#42639E #9E4291 #9E7D42 #429E4F

split-complementary

#42639E #9E4F42 #919E42

monochromatic

#1E2D48 #304873 #42639E #6082BD #8CA4CF

Accessibility & contrast

On white

5.98

#42639E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#42639E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42639E

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42639E	#FFFFFF	#000000	##FFFFFF
##42639E	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B68A0

Deuteranopia (green-blind)

#3F5F9D

Tritanopia (blue-blind)

#007079

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #42639e;
/* rgb */ color: rgb(66, 99, 158);
/* oklch */ color: oklch(50.3% 0.102 261.3);

Tailwind

colors: {
  custom: {
    50: '#7e8fbb',
    500: '#42639e',
    950: '#000000',
  },
}

SCSS

$custom: #42639e;
$custom-light: #7e8fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#42639e",
  "rgb": {
    "r": 66,
    "g": 99,
    "b": 158
  },
  "hsl": {
    "h": 218.478,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50262,
    "c": 0.10217,
    "h": 261.3
  },
  "luminance": 0.12551
}

Semantic roles & 50–950 ramp

primary

#42639E

secondary

#BAA682

accent

#A557D1

background

#F8F8FB

surface

#EFF0F6

border

#CACBD0

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #42639E

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

Preview Lab → · Contrast checker → · Palette generator →