#3F6ECA#3F6ECA

#3F6ECA is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.3% C 0.152 H 262.2°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ECA
RGB	rgb(63, 110, 202)
HSL	hsl(220, 57%, 52%)
HSV	hsv(220, 69%, 79%)
CMYK	cmyk(68.8%, 45.5%, 0%, 20.8%)
CIE-LAB	lab(47.59, 14.55, -52.57)
CIE-LCH	lch(47.59, 54.55, 285.47°)
OKLab	oklab(55.3% -0.0205 -0.1505)
OKLCH	oklch(55.3% 0.152 262.2)
XYZ	xyz(18.2827, 16.4710, 58.0814)
Luminance	0.1647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ECA #CA9B3F

analogous

#3FB4CA #3F6ECA #553FCA

triadic

#3F6ECA #CA3F6E #6ECA3F

tetradic

#3F6ECA #CA3FB4 #CA9B3F #3FCA55

square

#3F6ECA #CA3FB4 #CA9B3F #3FCA55

split-complementary

#3F6ECA #CA553F #B4CA3F

monochromatic

#1F3A70 #2C53A0 #3F6ECA #6F92D7 #9FB6E4

Accessibility & contrast

On white

4.89

#3F6ECA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#3F6ECA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ECA

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ECA	#FFFFFF	#000000	##FFFFFF
##3F6ECA	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4078CD

Deuteranopia (green-blind)

#246BC8

Tritanopia (blue-blind)

#008392

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6eca;
/* rgb */ color: rgb(63, 110, 202);
/* oklch */ color: oklch(55.3% 0.152 262.2);

Tailwind

colors: {
  custom: {
    50: '#8497db',
    500: '#3f6eca',
    950: '#000000',
  },
}

SCSS

$custom: #3f6eca;
$custom-light: #8497db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6eca",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 202
  },
  "hsl": {
    "h": 219.712,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.55296,
    "c": 0.15186,
    "h": 262.2
  },
  "luminance": 0.16473
}

Semantic roles & 50–950 ramp

primary

#3F6ECA

secondary

#D1BC94

accent

#AD48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6ECA

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

Preview Lab → · Contrast checker → · Palette generator →