#42639D#42639D

#42639D is a mid, moderate blue. Relative luminance 0.125; OKLCH L 50.2% C 0.101 H 261.0°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#42639D
RGB	rgb(66, 99, 157)
HSL	hsl(218, 41%, 44%)
HSV	hsv(218, 58%, 62%)
CMYK	cmyk(58%, 36.9%, 0%, 38.4%)
CIE-LAB	lab(42.02, 6.13, -35.16)
CIE-LCH	lch(42.02, 35.69, 279.90°)
OKLab	oklab(50.2% -0.0157 -0.0995)
OKLCH	oklch(50.2% 0.101 261)
XYZ	xyz(12.7923, 12.5152, 33.6333)
Luminance	0.1252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42639D #9D7C42

analogous

#42909D #42639D #4E429D

triadic

#42639D #9D4263 #639D42

tetradic

#42639D #9D4290 #9D7C42 #429D4E

square

#42639D #9D4290 #9D7C42 #429D4E

split-complementary

#42639D #9D4E42 #909D42

monochromatic

#1E2D47 #304872 #42639D #6081BC #8BA3CE

Accessibility & contrast

On white

5.99

#42639D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#42639D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42639D

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42639D	#FFFFFF	#000000	##FFFFFF
##42639D	1.00	5.99	3.50	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B689F

Deuteranopia (green-blind)

#405F9C

Tritanopia (blue-blind)

#007078

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #42639d;
/* rgb */ color: rgb(66, 99, 157);
/* oklch */ color: oklch(50.2% 0.101 261.0);

Tailwind

colors: {
  custom: {
    50: '#7e8fba',
    500: '#42639d',
    950: '#000000',
  },
}

SCSS

$custom: #42639d;
$custom-light: #7e8fba;
$custom-dark: #000000;

JSON

{
  "hex": "#42639d",
  "rgb": {
    "r": 66,
    "g": 99,
    "b": 157
  },
  "hsl": {
    "h": 218.242,
    "s": 40.807,
    "l": 43.725
  },
  "oklch": {
    "l": 0.50203,
    "c": 0.10073,
    "h": 261
  },
  "luminance": 0.12516
}

Semantic roles & 50–950 ramp

primary

#42639D

secondary

#B9A582

accent

#A557D1

background

#F8F8FB

surface

#EFF0F6

border

#CACBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #42639D

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

Preview Lab → · Contrast checker → · Palette generator →