#3066B3#3066B3

#3066B3 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.4% C 0.135 H 257.7°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3066B3
RGB	rgb(48, 102, 179)
HSL	hsl(215, 58%, 45%)
HSV	hsv(215, 73%, 70%)
CMYK	cmyk(73.2%, 43%, 0%, 29.8%)
CIE-LAB	lab(43.34, 8.95, -46.09)
CIE-LCH	lch(43.34, 46.95, 280.99°)
OKLab	oklab(51.41% -0.0288 -0.1318)
OKLCH	oklch(51.41% 0.135 257.7)
XYZ	xyz(14.1040, 13.3842, 44.4792)
Luminance	0.1339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3066B3 #B37D30

analogous

#30A8B3 #3066B3 #3C30B3

triadic

#3066B3 #B33066 #66B330

tetradic

#3066B3 #B330A8 #B37D30 #30B33C

square

#3066B3 #B330A8 #B37D30 #30B33C

split-complementary

#3066B3 #B33C30 #A8B330

monochromatic

#162F52 #234B83 #3066B3 #5085D0 #80A7DD

Accessibility & contrast

On white

5.71

#3066B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3066B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3066B3

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3066B3	#FFFFFF	#000000	##FFFFFF
##3066B3	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#406DB6

Deuteranopia (green-blind)

#2961B1

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3066b3;
/* rgb */ color: rgb(48, 102, 179);
/* oklch */ color: oklch(51.4% 0.135 257.7);

Tailwind

colors: {
  custom: {
    50: '#7991ca',
    500: '#3066b3',
    950: '#000000',
  },
}

SCSS

$custom: #3066b3;
$custom-light: #7991ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3066b3",
  "rgb": {
    "r": 48,
    "g": 102,
    "b": 179
  },
  "hsl": {
    "h": 215.267,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51405,
    "c": 0.1349,
    "h": 257.7
  },
  "luminance": 0.13386
}

Semantic roles & 50–950 ramp

primary

#3066B3

secondary

#C6A679

accent

#A147E1

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3066B3

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

Preview Lab → · Contrast checker → · Palette generator →