#3F518D#3F518D

#3F518D is a dark, moderate blue. Relative luminance 0.089; OKLCH L 45.0% C 0.101 H 269.5°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F518D
RGB	rgb(63, 81, 141)
HSL	hsl(226, 38%, 40%)
HSV	hsv(226, 55%, 55%)
CMYK	cmyk(55.3%, 42.6%, 0%, 44.7%)
CIE-LAB	lab(35.72, 11.51, -35.52)
CIE-LCH	lch(35.72, 37.34, 287.96°)
OKLab	oklab(45% -0.001 -0.1008)
OKLCH	oklch(45% 0.101 269.5)
XYZ	xyz(9.7985, 8.8640, 26.3887)
Luminance	0.0887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F518D #8D7B3F

analogous

#3F788D #3F518D #543F8D

triadic

#3F518D #8D3F51 #518D3F

tetradic

#3F518D #8D3F78 #8D7B3F #3F8D54

square

#3F518D #8D3F78 #8D7B3F #3F8D54

split-complementary

#3F518D #8D543F #788D3F

monochromatic

#192038 #2C3963 #3F518D #566BB3 #8090C6

Accessibility & contrast

On white

7.57

#3F518D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#3F518D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F518D

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F518D	#FFFFFF	#000000	##FFFFFF
##3F518D	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38588F

Deuteranopia (green-blind)

#2F518C

Tritanopia (blue-blind)

#175E68

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f518d;
/* rgb */ color: rgb(63, 81, 141);
/* oklch */ color: oklch(45.0% 0.101 269.5);

Tailwind

colors: {
  custom: {
    50: '#7a81af',
    500: '#3f518d',
    950: '#000000',
  },
}

SCSS

$custom: #3f518d;
$custom-light: #7a81af;
$custom-dark: #000000;

JSON

{
  "hex": "#3f518d",
  "rgb": {
    "r": 63,
    "g": 81,
    "b": 141
  },
  "hsl": {
    "h": 226.154,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.44999,
    "c": 0.1008,
    "h": 269.5
  },
  "luminance": 0.08865
}

Semantic roles & 50–950 ramp

primary

#3F518D

secondary

#B1A377

accent

#B35ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F518D

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

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