#3F5D8A#3F5D8A

#3F5D8A is a mid, moderate blue. Relative luminance 0.107; OKLCH L 47.6% C 0.082 H 258.3°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F5D8A
RGB	rgb(63, 93, 138)
HSL	hsl(216, 37%, 39%)
HSV	hsv(216, 54%, 54%)
CMYK	cmyk(54.3%, 32.6%, 0%, 45.9%)
CIE-LAB	lab(39.10, 2.78, -28.36)
CIE-LCH	lch(39.10, 28.49, 275.59°)
OKLab	oklab(47.57% -0.0166 -0.0798)
OKLCH	oklch(47.57% 0.082 258.3)
XYZ	xyz(10.5501, 10.7196, 25.5530)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5D8A #8A6C3F

analogous

#3F838A #3F5D8A #473F8A

triadic

#3F5D8A #8A3F5D #5D8A3F

tetradic

#3F5D8A #8A3F83 #8A6C3F #3F8A47

square

#3F5D8A #8A3F83 #8A6C3F #3F8A47

split-complementary

#3F5D8A #8A473F #838A3F

monochromatic

#192436 #2C4160 #3F5D8A #557AB1 #7F9BC5

Accessibility & contrast

On white

6.68

#3F5D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F5D8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5D8A

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5D8A	#FFFFFF	#000000	##FFFFFF
##3F5D8A	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608C

Deuteranopia (green-blind)

#425989

Tritanopia (blue-blind)

#17676D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f5d8a;
/* rgb */ color: rgb(63, 93, 138);
/* oklch */ color: oklch(47.6% 0.082 258.3);

Tailwind

colors: {
  custom: {
    50: '#798aac',
    500: '#3f5d8a',
    950: '#000000',
  },
}

SCSS

$custom: #3f5d8a;
$custom-light: #798aac;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5d8a",
  "rgb": {
    "r": 63,
    "g": 93,
    "b": 138
  },
  "hsl": {
    "h": 216,
    "s": 37.313,
    "l": 39.412
  },
  "oklch": {
    "l": 0.47567,
    "c": 0.08151,
    "h": 258.3
  },
  "luminance": 0.1072
}

Semantic roles & 50–950 ramp

primary

#3F5D8A

secondary

#AF9876

accent

#9F5BCD

background

#F7F8FA

surface

#EEF0F4

border

#C9CBCE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #3F5D8A

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

Preview Lab → · Contrast checker → · Palette generator →