#3F69B2#3F69B2

#3F69B2 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.7% C 0.125 H 260.7°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F69B2
RGB	rgb(63, 105, 178)
HSL	hsl(218, 48%, 47%)
HSV	hsv(218, 65%, 70%)
CMYK	cmyk(64.6%, 41%, 0%, 30.2%)
CIE-LAB	lab(44.76, 9.10, -43.20)
CIE-LCH	lch(44.76, 44.15, 281.89°)
OKLab	oklab(52.66% -0.0201 -0.123)
OKLCH	oklch(52.66% 0.125 260.7)
XYZ	xyz(15.1345, 14.3728, 44.0875)
Luminance	0.1437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F69B2 #B2883F

analogous

#3FA3B2 #3F69B2 #4F3FB2

triadic

#3F69B2 #B23F69 #69B23F

tetradic

#3F69B2 #B23FA3 #B2883F #3FB24F

square

#3F69B2 #B23FA3 #B2883F #3FB24F

split-complementary

#3F69B2 #B24F3F #A3B23F

monochromatic

#1F3458 #2F4E85 #3F69B2 #668AC9 #93ACD9

Accessibility & contrast

On white

5.42

#3F69B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3F69B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F69B2

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F69B2	#FFFFFF	#000000	##FFFFFF
##3F69B2	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4870B5

Deuteranopia (green-blind)

#3765B0

Tritanopia (blue-blind)

#007A85

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3f69b2;
/* rgb */ color: rgb(63, 105, 178);
/* oklch */ color: oklch(52.7% 0.125 260.7);

Tailwind

colors: {
  custom: {
    50: '#7f93c9',
    500: '#3f69b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f69b2;
$custom-light: #7f93c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f69b2",
  "rgb": {
    "r": 63,
    "g": 105,
    "b": 178
  },
  "hsl": {
    "h": 218.087,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52661,
    "c": 0.12466,
    "h": 260.7
  },
  "luminance": 0.14374
}

Semantic roles & 50–950 ramp

primary

#3F69B2

secondary

#C4AE89

accent

#A650D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F69B2

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

Preview Lab → · Contrast checker → · Palette generator →