#3A66C8#3A66C8

#3A66C8 is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.2% C 0.160 H 263.7°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3A66C8
RGB	rgb(58, 102, 200)
HSL	hsl(221, 56%, 51%)
HSV	hsv(221, 71%, 78%)
CMYK	cmyk(71%, 49%, 0%, 21.6%)
CIE-LAB	lab(45.04, 18.15, -55.52)
CIE-LCH	lch(45.04, 58.42, 288.11°)
OKLab	oklab(53.25% -0.0177 -0.1594)
OKLCH	oklch(53.25% 0.16 263.7)
XYZ	xyz(16.9179, 14.5706, 56.5532)
Luminance	0.1457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66C8 #C89C3A

analogous

#3AADC8 #3A66C8 #553AC8

triadic

#3A66C8 #C83A66 #66C83A

tetradic

#3A66C8 #C83AAD #C89C3A #3AC855

square

#3A66C8 #C83AAD #C89C3A #3AC855

split-complementary

#3A66C8 #C8553A #ADC83A

monochromatic

#1E356A #2B4D9A #3A66C8 #6A8BD5 #9AB0E3

Accessibility & contrast

On white

5.36

#3A66C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#3A66C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66C8

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66C8	#FFFFFF	#000000	##FFFFFF
##3A66C8	1.00	5.36	3.91	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F71CC

Deuteranopia (green-blind)

#0064C6

Tritanopia (blue-blind)

#007D8D

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3a66c8;
/* rgb */ color: rgb(58, 102, 200);
/* oklch */ color: oklch(53.2% 0.160 263.7);

Tailwind

colors: {
  custom: {
    50: '#8191d9',
    500: '#3a66c8',
    950: '#000000',
  },
}

SCSS

$custom: #3a66c8;
$custom-light: #8191d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66c8",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 200
  },
  "hsl": {
    "h": 221.408,
    "s": 56.349,
    "l": 50.588
  },
  "oklch": {
    "l": 0.53246,
    "c": 0.16036,
    "h": 263.7
  },
  "luminance": 0.14572
}

Semantic roles & 50–950 ramp

primary

#3A66C8

secondary

#CEBB8F

accent

#B148E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3A66C8

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

Preview Lab → · Contrast checker → · Palette generator →