#3F4878#3F4878

#3F4878 is a dark, moderate blue. Relative luminance 0.070; OKLCH L 41.7% C 0.081 H 274.3°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F4878
RGB	rgb(63, 72, 120)
HSL	hsl(231, 31%, 36%)
HSV	hsv(231, 48%, 47%)
CMYK	cmyk(47.5%, 40%, 0%, 52.9%)
CIE-LAB	lab(31.91, 10.35, -28.59)
CIE-LCH	lch(31.91, 30.41, 289.90°)
OKLab	oklab(41.69% 0.0061 -0.0806)
OKLCH	oklch(41.69% 0.081 274.3)
XYZ	xyz(7.7564, 7.0471, 18.7172)
Luminance	0.0705 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4878 #786F3F

analogous

#3F6478 #3F4878 #523F78

triadic

#3F4878 #783F48 #48783F

tetradic

#3F4878 #783F64 #786F3F #3F7852

square

#3F4878 #783F64 #786F3F #3F7852

split-complementary

#3F4878 #78523F #64783F

monochromatic

#151828 #2A3050 #3F4878 #5460A0 #7983B9

Accessibility & contrast

On white

8.72

#3F4878 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3F4878 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4878

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4878	#FFFFFF	#000000	##FFFFFF
##3F4878	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364E7A

Deuteranopia (green-blind)

#314977

Tritanopia (blue-blind)

#2B525A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f4878;
/* rgb */ color: rgb(63, 72, 120);
/* oklch */ color: oklch(41.7% 0.081 274.3);

Tailwind

colors: {
  custom: {
    50: '#777a9f',
    500: '#3f4878',
    950: '#000000',
  },
}

SCSS

$custom: #3f4878;
$custom-light: #777a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4878",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 120
  },
  "hsl": {
    "h": 230.526,
    "s": 31.148,
    "l": 35.882
  },
  "oklch": {
    "l": 0.41687,
    "c": 0.08085,
    "h": 274.3
  },
  "luminance": 0.07048
}

Semantic roles & 50–950 ramp

primary

#3F4878

secondary

#A39B70

accent

#B760C7

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#09090E

muted

#7B7B7E

Preview Lab

Preview with #3F4878

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

Preview Lab → · Contrast checker → · Palette generator →