#3F6BB2#3F6BB2

#3F6BB2 is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.1% C 0.122 H 259.5°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BB2
RGB	rgb(63, 107, 178)
HSL	hsl(217, 48%, 47%)
HSV	hsv(217, 65%, 70%)
CMYK	cmyk(64.6%, 39.9%, 0%, 30.2%)
CIE-LAB	lab(45.34, 7.84, -42.28)
CIE-LCH	lch(45.34, 43.00, 280.51°)
OKLab	oklab(53.11% -0.0222 -0.1203)
OKLCH	oklch(53.11% 0.122 259.5)
XYZ	xyz(15.3406, 14.7851, 44.1562)
Luminance	0.1479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BB2 #B2863F

analogous

#3FA5B2 #3F6BB2 #4C3FB2

triadic

#3F6BB2 #B23F6B #6BB23F

tetradic

#3F6BB2 #B23FA5 #B2863F #3FB24C

square

#3F6BB2 #B23FA5 #B2863F #3FB24C

split-complementary

#3F6BB2 #B24C3F #A5B23F

monochromatic

#1F3558 #2F5085 #3F6BB2 #668BC9 #93ADD9

Accessibility & contrast

On white

5.31

#3F6BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3F6BB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BB2

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BB2	#FFFFFF	#000000	##FFFFFF
##3F6BB2	1.00	5.31	3.96	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B71B5

Deuteranopia (green-blind)

#3B66B1

Tritanopia (blue-blind)

#007B86

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f6bb2;
/* rgb */ color: rgb(63, 107, 178);
/* oklch */ color: oklch(53.1% 0.122 259.5);

Tailwind

colors: {
  custom: {
    50: '#7f94c9',
    500: '#3f6bb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bb2;
$custom-light: #7f94c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bb2",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 178
  },
  "hsl": {
    "h": 217.043,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53107,
    "c": 0.12234,
    "h": 259.5
  },
  "luminance": 0.14787
}

Semantic roles & 50–950 ramp

primary

#3F6BB2

secondary

#C4AD89

accent

#A450D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6BB2

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

Preview Lab → · Contrast checker → · Palette generator →