#3F4599#3F4599

#3F4599 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.3% C 0.135 H 276.1°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F4599
RGB	rgb(63, 69, 153)
HSL	hsl(236, 42%, 42%)
HSV	hsv(236, 59%, 60%)
CMYK	cmyk(58.8%, 54.9%, 0%, 40%)
CIE-LAB	lab(33.16, 23.55, -46.92)
CIE-LCH	lch(33.16, 52.50, 296.66°)
OKLab	oklab(43.31% 0.0144 -0.1344)
OKLCH	oklch(43.31% 0.135 276.1)
XYZ	xyz(9.9259, 7.6122, 31.0771)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4599 #99933F

analogous

#3F7299 #3F4599 #663F99

triadic

#3F4599 #993F45 #45993F

tetradic

#3F4599 #993F72 #99933F #3F9966

square

#3F4599 #993F72 #99933F #3F9966

split-complementary

#3F4599 #99663F #72993F

monochromatic

#1B1E42 #2D316E #3F4599 #5A61BB #858ACD

Accessibility & contrast

On white

8.32

#3F4599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3F4599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4599

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4599	#FFFFFF	#000000	##FFFFFF
##3F4599	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F529C

Deuteranopia (green-blind)

#004A97

Tritanopia (blue-blind)

#035868

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f4599;
/* rgb */ color: rgb(63, 69, 153);
/* oklch */ color: oklch(43.3% 0.135 276.1);

Tailwind

colors: {
  custom: {
    50: '#7c78b8',
    500: '#3f4599',
    950: '#000000',
  },
}

SCSS

$custom: #3f4599;
$custom-light: #7c78b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4599",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 153
  },
  "hsl": {
    "h": 236,
    "s": 41.667,
    "l": 42.353
  },
  "oklch": {
    "l": 0.43306,
    "c": 0.13518,
    "h": 276.1
  },
  "luminance": 0.07613
}

Semantic roles & 50–950 ramp

primary

#3F4599

secondary

#B7B37C

accent

#C956D1

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #3F4599

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

Preview Lab → · Contrast checker → · Palette generator →