#3969B8#3969B8

#3969B8 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.8% C 0.135 H 259.8°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#3969B8
RGB	rgb(57, 105, 184)
HSL	hsl(217, 53%, 47%)
HSV	hsv(217, 69%, 72%)
CMYK	cmyk(69%, 42.9%, 0%, 27.8%)
CIE-LAB	lab(44.85, 10.24, -46.58)
CIE-LCH	lch(44.85, 47.69, 282.40°)
OKLab	oklab(52.77% -0.0238 -0.133)
OKLCH	oklch(52.77% 0.135 259.8)
XYZ	xyz(15.3875, 14.4321, 47.3128)
Luminance	0.1443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3969B8 #B88839

analogous

#39A8B8 #3969B8 #4939B8

triadic

#3969B8 #B83969 #69B839

tetradic

#3969B8 #B839A8 #B88839 #39B849

square

#3969B8 #B839A8 #B88839 #39B849

split-complementary

#3969B8 #B84939 #A8B839

monochromatic

#1C345B #2B4E89 #3969B8 #608ACE #8FACDC

Accessibility & contrast

On white

5.40

#3969B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#3969B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3969B8

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3969B8	#FFFFFF	#000000	##FFFFFF
##3969B8	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4370BB

Deuteranopia (green-blind)

#2E65B6

Tritanopia (blue-blind)

#007B87

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3969b8;
/* rgb */ color: rgb(57, 105, 184);
/* oklch */ color: oklch(52.8% 0.135 259.8);

Tailwind

colors: {
  custom: {
    50: '#7e93ce',
    500: '#3969b8',
    950: '#000000',
  },
}

SCSS

$custom: #3969b8;
$custom-light: #7e93ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3969b8",
  "rgb": {
    "r": 57,
    "g": 105,
    "b": 184
  },
  "hsl": {
    "h": 217.323,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52766,
    "c": 0.13516,
    "h": 259.8
  },
  "luminance": 0.14434
}

Semantic roles & 50–950 ramp

primary

#3969B8

secondary

#C7AE86

accent

#A64CDC

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3969B8

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

Preview Lab → · Contrast checker → · Palette generator →