#3F498F#3F498F

#3F498F is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.4% C 0.115 H 274.5°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#3F498F
RGB	rgb(63, 73, 143)
HSL	hsl(233, 39%, 40%)
HSV	hsv(233, 56%, 56%)
CMYK	cmyk(55.9%, 49%, 0%, 43.9%)
CIE-LAB	lab(33.57, 17.46, -40.17)
CIE-LCH	lch(33.57, 43.80, 293.49°)
OKLab	oklab(43.4% 0.009 -0.1145)
OKLCH	oklch(43.4% 0.115 274.5)
XYZ	xyz(9.3888, 7.8044, 26.9929)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F498F #8F853F

analogous

#3F718F #3F498F #5D3F8F

triadic

#3F498F #8F3F49 #498F3F

tetradic

#3F498F #8F3F71 #8F853F #3F8F5D

square

#3F498F #8F3F71 #8F853F #3F8F5D

split-complementary

#3F498F #8F5D3F #718F3F

monochromatic

#1A1E3A #2C3365 #3F498F #5662B5 #818AC7

Accessibility & contrast

On white

8.20

#3F498F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3F498F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F498F

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F498F	#FFFFFF	#000000	##FFFFFF
##3F498F	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285292

Deuteranopia (green-blind)

#1E4C8D

Tritanopia (blue-blind)

#165865

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f498f;
/* rgb */ color: rgb(63, 73, 143);
/* oklch */ color: oklch(43.4% 0.115 274.5);

Tailwind

colors: {
  custom: {
    50: '#7b7bb0',
    500: '#3f498f',
    950: '#000000',
  },
}

SCSS

$custom: #3f498f;
$custom-light: #7b7bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f498f",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 143
  },
  "hsl": {
    "h": 232.5,
    "s": 38.835,
    "l": 40.392
  },
  "oklch": {
    "l": 0.43398,
    "c": 0.11487,
    "h": 274.5
  },
  "luminance": 0.07805
}

Semantic roles & 50–950 ramp

primary

#3F498F

secondary

#B2AB78

accent

#C059CF

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #3F498F

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

Preview Lab → · Contrast checker → · Palette generator →