#3A378F#3A378F

#3A378F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.141 H 279.2°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#3A378F
RGB	rgb(58, 55, 143)
HSL	hsl(242, 44%, 39%)
HSV	hsv(242, 62%, 56%)
CMYK	cmyk(59.4%, 61.5%, 0%, 43.9%)
CIE-LAB	lab(28.42, 28.28, -48.51)
CIE-LCH	lch(28.42, 56.15, 300.24°)
OKLab	oklab(39.45% 0.0227 -0.1393)
OKLCH	oklch(39.45% 0.141 279.2)
XYZ	xyz(8.0675, 5.6145, 26.6399)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A378F #8C8F37

analogous

#37608F #3A378F #66378F

triadic

#3A378F #8F3A37 #378F3A

tetradic

#3A378F #8F3760 #8C8F37 #378F66

square

#3A378F #8F3760 #8C8F37 #378F66

split-complementary

#3A378F #8F6637 #608F37

monochromatic

#161537 #282663 #3A378F #4E4AB9 #7976CA

Accessibility & contrast

On white

9.89

#3A378F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3A378F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A378F

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A378F	#FFFFFF	#000000	##FFFFFF
##3A378F	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#044C5D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3a378f;
/* rgb */ color: rgb(58, 55, 143);
/* oklch */ color: oklch(39.4% 0.141 279.2);

Tailwind

colors: {
  custom: {
    50: '#796eb0',
    500: '#3a378f',
    950: '#000000',
  },
}

SCSS

$custom: #3a378f;
$custom-light: #796eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a378f",
  "rgb": {
    "r": 58,
    "g": 55,
    "b": 143
  },
  "hsl": {
    "h": 242.045,
    "s": 44.444,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39448,
    "c": 0.14118,
    "h": 279.2
  },
  "luminance": 0.05615
}

Semantic roles & 50–950 ramp

primary

#3A378F

secondary

#B1B36F

accent

#D454D0

background

#F7F6FA

surface

#EEEBF5

border

#C9C6CF

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #3A378F

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

Preview Lab → · Contrast checker → · Palette generator →