#3F6DCE#3F6DCE

#3F6DCE is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.4% C 0.159 H 263.1°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DCE
RGB	rgb(63, 109, 206)
HSL	hsl(221, 59%, 53%)
HSV	hsv(221, 69%, 81%)
CMYK	cmyk(69.4%, 47.1%, 0%, 19.2%)
CIE-LAB	lab(47.56, 16.62, -54.91)
CIE-LCH	lch(47.56, 57.37, 286.84°)
OKLab	oklab(55.35% -0.019 -0.1574)
OKLCH	oklch(55.35% 0.159 263.1)
XYZ	xyz(18.6552, 16.4484, 60.5723)
Luminance	0.1645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DCE #CEA03F

analogous

#3FB5CE #3F6DCE #583FCE

triadic

#3F6DCE #CE3F6D #6DCE3F

tetradic

#3F6DCE #CE3FB5 #CEA03F #3FCE58

square

#3F6DCE #CE3FB5 #CEA03F #3FCE58

split-complementary

#3F6DCE #CE583F #B5CE3F

monochromatic

#1E3A75 #2A52A6 #3F6DCE #7092DA #A1B7E7

Accessibility & contrast

On white

4.90

#3F6DCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#3F6DCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DCE

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DCE	#FFFFFF	#000000	##FFFFFF
##3F6DCE	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A78D2

Deuteranopia (green-blind)

#186BCC

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6dce;
/* rgb */ color: rgb(63, 109, 206);
/* oklch */ color: oklch(55.4% 0.159 263.1);

Tailwind

colors: {
  custom: {
    50: '#8496dd',
    500: '#3f6dce',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dce;
$custom-light: #8496dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dce",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 206
  },
  "hsl": {
    "h": 220.699,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55353,
    "c": 0.1585,
    "h": 263.1
  },
  "luminance": 0.1645
}

Semantic roles & 50–950 ramp

primary

#3F6DCE

secondary

#D3BF95

accent

#B045E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6DCE

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

Preview Lab → · Contrast checker → · Palette generator →