#3F5CC1#3F5CC1

#3F5CC1 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 50.9% C 0.162 H 268.1°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CC1
RGB	rgb(63, 92, 193)
HSL	hsl(227, 51%, 50%)
HSV	hsv(227, 67%, 76%)
CMYK	cmyk(67.4%, 52.3%, 0%, 24.3%)
CIE-LAB	lab(42.09, 22.77, -56.22)
CIE-LCH	lch(42.09, 60.66, 292.05°)
OKLab	oklab(50.92% -0.0053 -0.1615)
OKLCH	oklch(50.92% 0.162 268.1)
XYZ	xyz(15.4994, 12.5598, 52.0492)
Luminance	0.1256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CC1 #C1A43F

analogous

#3F9DC1 #3F5CC1 #633FC1

triadic

#3F5CC1 #C13F5C #5CC13F

tetradic

#3F5CC1 #C13F9D #C1A43F #3FC163

square

#3F5CC1 #C13F9D #C1A43F #3FC163

split-complementary

#3F5CC1 #C1633F #9DC13F

monochromatic

#213065 #304693 #3F5CC1 #6D83D0 #9CABDF

Accessibility & contrast

On white

5.98

#3F5CC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#3F5CC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CC1

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CC1	#FFFFFF	#000000	##FFFFFF
##3F5CC1	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B6AC5

Deuteranopia (green-blind)

#005EBF

Tritanopia (blue-blind)

#007485

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5cc1;
/* rgb */ color: rgb(63, 92, 193);
/* oklch */ color: oklch(50.9% 0.162 268.1);

Tailwind

colors: {
  custom: {
    50: '#8389d4',
    500: '#3f5cc1',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cc1;
$custom-light: #8389d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cc1",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 193
  },
  "hsl": {
    "h": 226.615,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.50919,
    "c": 0.16158,
    "h": 268.1
  },
  "luminance": 0.12561
}

Semantic roles & 50–950 ramp

primary

#3F5CC1

secondary

#CBBE91

accent

#BB4DDB

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5CC1

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

Preview Lab → · Contrast checker → · Palette generator →