#3F4097#3F4097

#3F4097 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.2% C 0.139 H 278.1°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F4097
RGB	rgb(63, 64, 151)
HSL	hsl(239, 41%, 42%)
HSV	hsv(239, 58%, 59%)
CMYK	cmyk(58.3%, 57.6%, 0%, 40.8%)
CIE-LAB	lab(31.71, 26.13, -48.05)
CIE-LCH	lch(31.71, 54.70, 298.54°)
OKLab	oklab(42.18% 0.0197 -0.1378)
OKLCH	oklch(42.18% 0.139 278.1)
XYZ	xyz(9.4674, 6.9573, 30.1162)
Luminance	0.0696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4097 #97963F

analogous

#3F6C97 #3F4097 #6A3F97

triadic

#3F4097 #973F40 #40973F

tetradic

#3F4097 #973F6C #97963F #3F976A

square

#3F4097 #973F6C #97963F #3F976A

split-complementary

#3F4097 #976A3F #6C973F

monochromatic

#1B1B41 #2D2E6C #3F4097 #595ABA #8585CC

Accessibility & contrast

On white

8.78

#3F4097 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F4097 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4097

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4097	#FFFFFF	#000000	##FFFFFF
##3F4097	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9A

Deuteranopia (green-blind)

#004795

Tritanopia (blue-blind)

#0A5465

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f4097;
/* rgb */ color: rgb(63, 64, 151);
/* oklch */ color: oklch(42.2% 0.139 278.1);

Tailwind

colors: {
  custom: {
    50: '#7c75b6',
    500: '#3f4097',
    950: '#000000',
  },
}

SCSS

$custom: #3f4097;
$custom-light: #7c75b6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4097",
  "rgb": {
    "r": 63,
    "g": 64,
    "b": 151
  },
  "hsl": {
    "h": 239.318,
    "s": 41.121,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42176,
    "c": 0.13918,
    "h": 278.1
  },
  "luminance": 0.06958
}

Semantic roles & 50–950 ramp

primary

#3F4097

secondary

#B6B67C

accent

#D057D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #3F4097

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

Preview Lab → · Contrast checker → · Palette generator →