#3F598D#3F598D

#3F598D is a mid, moderate blue. Relative luminance 0.101; OKLCH L 46.8% C 0.091 H 263.2°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F598D
RGB	rgb(63, 89, 141)
HSL	hsl(220, 38%, 40%)
HSV	hsv(220, 55%, 55%)
CMYK	cmyk(55.3%, 36.9%, 0%, 44.7%)
CIE-LAB	lab(38.06, 6.33, -31.81)
CIE-LCH	lch(38.06, 32.44, 281.26°)
OKLab	oklab(46.81% -0.0108 -0.0899)
OKLCH	oklch(46.81% 0.091 263.2)
XYZ	xyz(10.4284, 10.1238, 26.5987)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F598D #8D733F

analogous

#3F808D #3F598D #4C3F8D

triadic

#3F598D #8D3F59 #598D3F

tetradic

#3F598D #8D3F80 #8D733F #3F8D4C

square

#3F598D #8D3F80 #8D733F #3F8D4C

split-complementary

#3F598D #8D4C3F #808D3F

monochromatic

#192438 #2C3E63 #3F598D #5675B3 #8098C6

Accessibility & contrast

On white

6.94

#3F598D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3F598D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F598D

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F598D	#FFFFFF	#000000	##FFFFFF
##3F598D	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445D8F

Deuteranopia (green-blind)

#3B568C

Tritanopia (blue-blind)

#14646C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f598d;
/* rgb */ color: rgb(63, 89, 141);
/* oklch */ color: oklch(46.8% 0.091 263.2);

Tailwind

colors: {
  custom: {
    50: '#7a87ae',
    500: '#3f598d',
    950: '#000000',
  },
}

SCSS

$custom: #3f598d;
$custom-light: #7a87ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f598d",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 141
  },
  "hsl": {
    "h": 220,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.46808,
    "c": 0.09053,
    "h": 263.2
  },
  "luminance": 0.10125
}

Semantic roles & 50–950 ramp

primary

#3F598D

secondary

#B19D77

accent

#A75ACE

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#0A0B10

muted

#7C7C7F

Preview Lab

Preview with #3F598D

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

Preview Lab → · Contrast checker → · Palette generator →