#3F5ACD#3F5ACD

#3F5ACD is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.4% C 0.180 H 269.1°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ACD
RGB	rgb(63, 90, 205)
HSL	hsl(229, 59%, 53%)
HSV	hsv(229, 69%, 80%)
CMYK	cmyk(69.3%, 56.1%, 0%, 19.6%)
CIE-LAB	lab(42.42, 28.35, -62.63)
CIE-LCH	lch(42.42, 68.74, 294.35°)
OKLab	oklab(51.44% -0.0028 -0.1804)
OKLCH	oklch(51.44% 0.18 269.1)
XYZ	xyz(16.7217, 12.7752, 59.3304)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ACD #CDB23F

analogous

#3FA1CD #3F5ACD #6B3FCD

triadic

#3F5ACD #CD3F5A #5ACD3F

tetradic

#3F5ACD #CD3FA1 #CDB23F #3FCD6B

square

#3F5ACD #CD3FA1 #CDB23F #3FCD6B

split-complementary

#3F5ACD #CD6B3F #A1CD3F

monochromatic

#1E2E74 #2B42A4 #3F5ACD #7084DA #A0ADE6

Accessibility & contrast

On white

5.91

#3F5ACD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#3F5ACD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ACD

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ACD	#FFFFFF	#000000	##FFFFFF
##3F5ACD	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD1

Deuteranopia (green-blind)

#005ECB

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f5acd;
/* rgb */ color: rgb(63, 90, 205);
/* oklch */ color: oklch(51.4% 0.180 269.1);

Tailwind

colors: {
  custom: {
    50: '#8588dd',
    500: '#3f5acd',
    950: '#000000',
  },
}

SCSS

$custom: #3f5acd;
$custom-light: #8588dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5acd",
  "rgb": {
    "r": 63,
    "g": 90,
    "b": 205
  },
  "hsl": {
    "h": 228.592,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.51438,
    "c": 0.18038,
    "h": 269.1
  },
  "luminance": 0.12777
}

Semantic roles & 50–950 ramp

primary

#3F5ACD

secondary

#D3C795

accent

#C446E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ACD

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

Preview Lab → · Contrast checker → · Palette generator →