#3A66BC#3A66BC

#3A66BC is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.4% C 0.144 H 262.2°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3A66BC
RGB	rgb(58, 102, 188)
HSL	hsl(220, 53%, 48%)
HSV	hsv(220, 69%, 74%)
CMYK	cmyk(69.1%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(44.28, 13.76, -49.81)
CIE-LCH	lch(44.28, 51.68, 285.45°)
OKLab	oklab(52.42% -0.0195 -0.1426)
OKLCH	oklch(52.42% 0.144 262.2)
XYZ	xyz(15.5702, 14.0315, 49.4550)
Luminance	0.1403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66BC #BC903A

analogous

#3AA7BC #3A66BC #4F3ABC

triadic

#3A66BC #BC3A66 #66BC3A

tetradic

#3A66BC #BC3AA7 #BC903A #3ABC4F

square

#3A66BC #BC3AA7 #BC903A #3ABC4F

split-complementary

#3A66BC #BC4F3A #A7BC3A

monochromatic

#1D335E #2C4D8D #3A66BC #6488CF #93ACDE

Accessibility & contrast

On white

5.52

#3A66BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3A66BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66BC

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66BC	#FFFFFF	#000000	##FFFFFF
##3A66BC	1.00	5.52	3.81	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6FBF

Deuteranopia (green-blind)

#2163BA

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3a66bc;
/* rgb */ color: rgb(58, 102, 188);
/* oklch */ color: oklch(52.4% 0.144 262.2);

Tailwind

colors: {
  custom: {
    50: '#7f91d1',
    500: '#3a66bc',
    950: '#000000',
  },
}

SCSS

$custom: #3a66bc;
$custom-light: #7f91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66bc",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 219.692,
    "s": 52.846,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52418,
    "c": 0.14389,
    "h": 262.2
  },
  "luminance": 0.14033
}

Semantic roles & 50–950 ramp

primary

#3A66BC

secondary

#C9B389

accent

#AB4CDC

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3A66BC

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

Preview Lab → · Contrast checker → · Palette generator →