#3F47A2#3F47A2

#3F47A2 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.4% C 0.145 H 275.0°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F47A2
RGB	rgb(63, 71, 162)
HSL	hsl(235, 44%, 44%)
HSV	hsv(235, 61%, 64%)
CMYK	cmyk(61.1%, 56.2%, 0%, 36.5%)
CIE-LAB	lab(34.34, 25.38, -50.45)
CIE-LCH	lch(34.34, 56.48, 296.70°)
OKLab	oklab(44.39% 0.0127 -0.1448)
OKLCH	oklch(44.39% 0.145 275)
XYZ	xyz(10.8226, 8.1710, 35.1823)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F47A2 #A29A3F

analogous

#3F79A2 #3F47A2 #693FA2

triadic

#3F47A2 #A23F47 #47A23F

tetradic

#3F47A2 #A23F79 #A29A3F #3FA269

square

#3F47A2 #A23F79 #A29A3F #3FA269

split-complementary

#3F47A2 #A2693F #79A23F

monochromatic

#1D204A #2E3476 #3F47A2 #5E66C0 #8A90D1

Accessibility & contrast

On white

7.97

#3F47A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3F47A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47A2

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47A2	#FFFFFF	#000000	##FFFFFF
##3F47A2	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A5

Deuteranopia (green-blind)

#004DA0

Tritanopia (blue-blind)

#005C6D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f47a2;
/* rgb */ color: rgb(63, 71, 162);
/* oklch */ color: oklch(44.4% 0.145 275.0);

Tailwind

colors: {
  custom: {
    50: '#7e7abe',
    500: '#3f47a2',
    950: '#000000',
  },
}

SCSS

$custom: #3f47a2;
$custom-light: #7e7abe;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47a2",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 162
  },
  "hsl": {
    "h": 235.152,
    "s": 44,
    "l": 44.118
  },
  "oklch": {
    "l": 0.4439,
    "c": 0.14535,
    "h": 275
  },
  "luminance": 0.08172
}

Semantic roles & 50–950 ramp

primary

#3F47A2

secondary

#BCB781

accent

#C954D4

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F47A2

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

Preview Lab → · Contrast checker → · Palette generator →