#3F5ED9#3F5ED9

#3F5ED9 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.1% C 0.191 H 268.4°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ED9
RGB	rgb(63, 94, 217)
HSL	hsl(228, 67%, 55%)
HSV	hsv(228, 71%, 85%)
CMYK	cmyk(71%, 56.7%, 0%, 14.9%)
CIE-LAB	lab(44.33, 30.09, -66.40)
CIE-LCH	lch(44.33, 72.90, 294.38°)
OKLab	oklab(53.15% -0.0055 -0.1914)
OKLCH	oklch(53.15% 0.191 268.4)
XYZ	xyz(18.5727, 14.0700, 67.3692)
Luminance	0.1407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ED9 #D9BA3F

analogous

#3FABD9 #3F5ED9 #6D3FD9

triadic

#3F5ED9 #D93F5E #5ED93F

tetradic

#3F5ED9 #D93FAB #D9BA3F #3FD96D

square

#3F5ED9 #D93FAB #D9BA3F #3FD96D

split-complementary

#3F5ED9 #D96D3F #ABD93F

monochromatic

#1A2F84 #2442B7 #3F5ED9 #7289E3 #A5B4ED

Accessibility & contrast

On white

5.51

#3F5ED9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3F5ED9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ED9

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ED9	#FFFFFF	#000000	##FFFFFF
##3F5ED9	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DD

Deuteranopia (green-blind)

#0062D7

Tritanopia (blue-blind)

#007C92

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f5ed9;
/* rgb */ color: rgb(63, 94, 217);
/* oklch */ color: oklch(53.1% 0.191 268.4);

Tailwind

colors: {
  custom: {
    50: '#878be6',
    500: '#3f5ed9',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ed9;
$custom-light: #878be6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ed9",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 217
  },
  "hsl": {
    "h": 227.922,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.53149,
    "c": 0.19148,
    "h": 268.4
  },
  "luminance": 0.14072
}

Semantic roles & 50–950 ramp

primary

#3F5ED9

secondary

#DACD9A

accent

#C73EEA

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F5ED9

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

Preview Lab → · Contrast checker → · Palette generator →