#3A66BB#3A66BB

#3A66BB is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.3% C 0.143 H 262.1°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#3A66BB
RGB	rgb(58, 102, 187)
HSL	hsl(220, 53%, 48%)
HSV	hsv(220, 69%, 73%)
CMYK	cmyk(69%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.22, 13.40, -49.33)
CIE-LCH	lch(44.22, 51.11, 285.20°)
OKLab	oklab(52.35% -0.0196 -0.1411)
OKLCH	oklch(52.35% 0.143 262.1)
XYZ	xyz(15.4627, 13.9886, 48.8892)
Luminance	0.1399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66BB #BB8F3A

analogous

#3AA6BB #3A66BB #4E3ABB

triadic

#3A66BB #BB3A66 #66BB3A

tetradic

#3A66BB #BB3AA6 #BB8F3A #3ABB4E

square

#3A66BB #BB3AA6 #BB8F3A #3ABB4E

split-complementary

#3A66BB #BB4E3A #A6BB3A

monochromatic

#1D335E #2C4D8C #3A66BB #6388CF #92ACDD

Accessibility & contrast

On white

5.53

#3A66BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3A66BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66BB

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66BB	#FFFFFF	#000000	##FFFFFF
##3A66BB	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBE

Deuteranopia (green-blind)

#2363B9

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3a66bb;
/* rgb */ color: rgb(58, 102, 187);
/* oklch */ color: oklch(52.3% 0.143 262.1);

Tailwind

colors: {
  custom: {
    50: '#7f91d0',
    500: '#3a66bb',
    950: '#000000',
  },
}

SCSS

$custom: #3a66bb;
$custom-light: #7f91d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66bb",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 219.535,
    "s": 52.653,
    "l": 48.039
  },
  "oklch": {
    "l": 0.5235,
    "c": 0.14251,
    "h": 262.1
  },
  "luminance": 0.1399
}

Semantic roles & 50–950 ramp

primary

#3A66BB

secondary

#C8B388

accent

#AB4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3A66BB

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

Preview Lab → · Contrast checker → · Palette generator →