#3F5ACF#3F5ACF

#3F5ACF is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.6% C 0.183 H 269.1°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ACF
RGB	rgb(63, 90, 207)
HSL	hsl(229, 60%, 53%)
HSV	hsv(229, 70%, 81%)
CMYK	cmyk(69.6%, 56.5%, 0%, 18.8%)
CIE-LAB	lab(42.57, 29.06, -63.54)
CIE-LCH	lch(42.57, 69.87, 294.58°)
OKLab	oklab(51.6% -0.0027 -0.183)
OKLCH	oklch(51.6% 0.183 269.1)
XYZ	xyz(16.9647, 12.8724, 60.6100)
Luminance	0.1287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ACF #CFB43F

analogous

#3FA2CF #3F5ACF #6C3FCF

triadic

#3F5ACF #CF3F5A #5ACF3F

tetradic

#3F5ACF #CF3FA2 #CFB43F #3FCF6C

square

#3F5ACF #CF3FA2 #CFB43F #3FCF6C

split-complementary

#3F5ACF #CF6C3F #A2CF3F

monochromatic

#1E2E76 #2A41A7 #3F5ACF #7084DB #A1AEE7

Accessibility & contrast

On white

5.87

#3F5ACF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#3F5ACF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ACF

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ACF	#FFFFFF	#000000	##FFFFFF
##3F5ACF	1.00	5.87	3.57	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD3

Deuteranopia (green-blind)

#005ECD

Tritanopia (blue-blind)

#00778C

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f5acf;
/* rgb */ color: rgb(63, 90, 207);
/* oklch */ color: oklch(51.6% 0.183 269.1);

Tailwind

colors: {
  custom: {
    50: '#8688de',
    500: '#3f5acf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5acf;
$custom-light: #8688de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5acf",
  "rgb": {
    "r": 63,
    "g": 90,
    "b": 207
  },
  "hsl": {
    "h": 228.75,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51596,
    "c": 0.18306,
    "h": 269.1
  },
  "luminance": 0.12874
}

Semantic roles & 50–950 ramp

primary

#3F5ACF

secondary

#D4C896

accent

#C545E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ACF

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

Preview Lab → · Contrast checker → · Palette generator →