#3F5BD4#3F5BD4

#3F5BD4 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.2% C 0.189 H 269.0°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BD4
RGB	rgb(63, 91, 212)
HSL	hsl(229, 63%, 54%)
HSV	hsv(229, 70%, 83%)
CMYK	cmyk(70.3%, 57.1%, 0%, 16.9%)
CIE-LAB	lab(43.20, 30.21, -65.39)
CIE-LCH	lch(43.20, 72.03, 294.79°)
OKLab	oklab(52.18% -0.0033 -0.1885)
OKLCH	oklch(52.18% 0.189 269)
XYZ	xyz(17.6706, 13.2906, 63.9087)
Luminance	0.1329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BD4 #D4B83F

analogous

#3FA6D4 #3F5BD4 #6E3FD4

triadic

#3F5BD4 #D43F5B #5BD43F

tetradic

#3F5BD4 #D43FA6 #D4B83F #3FD46E

square

#3F5BD4 #D43FA6 #D4B83F #3FD46E

split-complementary

#3F5BD4 #D46E3F #A6D43F

monochromatic

#1C2E7D #2741AF #3F5BD4 #7186DF #A3B0EA

Accessibility & contrast

On white

5.74

#3F5BD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3F5BD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BD4

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BD4	#FFFFFF	#000000	##FFFFFF
##3F5BD4	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD8

Deuteranopia (green-blind)

#005FD2

Tritanopia (blue-blind)

#00798F

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5bd4;
/* rgb */ color: rgb(63, 91, 212);
/* oklch */ color: oklch(52.2% 0.189 269.0);

Tailwind

colors: {
  custom: {
    50: '#8689e2',
    500: '#3f5bd4',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bd4;
$custom-light: #8689e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bd4",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 212
  },
  "hsl": {
    "h": 228.725,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52182,
    "c": 0.1885,
    "h": 269
  },
  "luminance": 0.13292
}

Semantic roles & 50–950 ramp

primary

#3F5BD4

secondary

#D7CB98

accent

#C741E6

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #3F5BD4

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

Preview Lab → · Contrast checker → · Palette generator →