#3D378B#3D378B

#3D378B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.135 H 281.4°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#3D378B
RGB	rgb(61, 55, 139)
HSL	hsl(244, 43%, 38%)
HSV	hsv(244, 60%, 55%)
CMYK	cmyk(56.1%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(28.35, 27.50, -46.14)
CIE-LCH	lch(28.35, 53.71, 300.80°)
OKLab	oklab(39.36% 0.0268 -0.1323)
OKLCH	oklch(39.36% 0.135 281.4)
XYZ	xyz(7.9494, 5.5881, 25.0808)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D378B #858B37

analogous

#375B8B #3D378B #67378B

triadic

#3D378B #8B3D37 #378B3D

tetradic

#3D378B #8B375B #858B37 #378B67

square

#3D378B #8B375B #858B37 #378B67

split-complementary

#3D378B #8B6737 #5B8B37

monochromatic

#171433 #2A265F #3D378B #5048B7 #7A74C8

Accessibility & contrast

On white

9.92

#3D378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3D378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D378B

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D378B	#FFFFFF	#000000	##FFFFFF
##3D378B	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#004089

Tritanopia (blue-blind)

#194B5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3d378b;
/* rgb */ color: rgb(61, 55, 139);
/* oklch */ color: oklch(39.4% 0.135 281.4);

Tailwind

colors: {
  custom: {
    50: '#7a6eae',
    500: '#3d378b',
    950: '#000000',
  },
}

SCSS

$custom: #3d378b;
$custom-light: #7a6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#3d378b",
  "rgb": {
    "r": 61,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 244.286,
    "s": 43.299,
    "l": 38.039
  },
  "oklch": {
    "l": 0.39359,
    "c": 0.13496,
    "h": 281.4
  },
  "luminance": 0.05589
}

Semantic roles & 50–950 ramp

primary

#3D378B

secondary

#ACB16D

accent

#D355CA

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #3D378B

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

Preview Lab → · Contrast checker → · Palette generator →