#3B428F#3B428F

#3B428F is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.126 H 275.6°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#3B428F
RGB	rgb(59, 66, 143)
HSL	hsl(235, 42%, 40%)
HSV	hsv(235, 59%, 56%)
CMYK	cmyk(58.7%, 53.8%, 0%, 43.9%)
CIE-LAB	lab(31.37, 21.24, -43.73)
CIE-LCH	lch(31.37, 48.61, 295.90°)
OKLab	oklab(41.66% 0.0123 -0.1252)
OKLCH	oklch(41.66% 0.126 275.6)
XYZ	xyz(8.7082, 6.8088, 26.8366)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B428F #8F883B

analogous

#3B6C8F #3B428F #5E3B8F

triadic

#3B428F #8F3B42 #428F3B

tetradic

#3B428F #8F3B6C #8F883B #3B8F5E

square

#3B428F #8F3B6C #8F883B #3B8F5E

split-complementary

#3B428F #8F5E3B #6C8F3B

monochromatic

#171A38 #292E64 #3B428F #5059B7 #7C82C9

Accessibility & contrast

On white

8.89

#3B428F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3B428F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B428F

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B428F	#FFFFFF	#000000	##FFFFFF
##3B428F	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154D92

Deuteranopia (green-blind)

#01468D

Tritanopia (blue-blind)

#055462

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3b428f;
/* rgb */ color: rgb(59, 66, 143);
/* oklch */ color: oklch(41.7% 0.126 275.6);

Tailwind

colors: {
  custom: {
    50: '#7976b0',
    500: '#3b428f',
    950: '#000000',
  },
}

SCSS

$custom: #3b428f;
$custom-light: #7976b0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b428f",
  "rgb": {
    "r": 59,
    "g": 66,
    "b": 143
  },
  "hsl": {
    "h": 235,
    "s": 41.584,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41661,
    "c": 0.12576,
    "h": 275.6
  },
  "luminance": 0.06809
}

Semantic roles & 50–950 ramp

primary

#3B428F

secondary

#B2AD73

accent

#C756D1

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #3B428F

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

Preview Lab → · Contrast checker → · Palette generator →