#3366AF#3366AF

#3366AF is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.3% C 0.128 H 257.7°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3366AF
RGB	rgb(51, 102, 175)
HSL	hsl(215, 55%, 44%)
HSV	hsv(215, 71%, 69%)
CMYK	cmyk(70.9%, 41.7%, 0%, 31.4%)
CIE-LAB	lab(43.21, 7.90, -43.94)
CIE-LCH	lch(43.21, 44.65, 280.19°)
OKLab	oklab(51.26% -0.0274 -0.1254)
OKLCH	oklch(51.26% 0.128 257.7)
XYZ	xyz(13.8517, 13.3002, 42.3863)
Luminance	0.1330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366AF #AF7C33

analogous

#33A4AF #3366AF #3E33AF

triadic

#3366AF #AF3366 #66AF33

tetradic

#3366AF #AF33A4 #AF7C33 #33AF3E

square

#3366AF #AF33A4 #AF7C33 #33AF3E

split-complementary

#3366AF #AF3E33 #A4AF33

monochromatic

#172F50 #254A80 #3366AF #5285CD #82A6DB

Accessibility & contrast

On white

5.74

#3366AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3366AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366AF

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366AF	#FFFFFF	#000000	##FFFFFF
##3366AF	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446CB2

Deuteranopia (green-blind)

#2F61AE

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3366af;
/* rgb */ color: rgb(51, 102, 175);
/* oklch */ color: oklch(51.3% 0.128 257.7);

Tailwind

colors: {
  custom: {
    50: '#7a91c7',
    500: '#3366af',
    950: '#000000',
  },
}

SCSS

$custom: #3366af;
$custom-light: #7a91c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3366af",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 175
  },
  "hsl": {
    "h": 215.323,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51263,
    "c": 0.1284,
    "h": 257.7
  },
  "luminance": 0.13302
}

Semantic roles & 50–950 ramp

primary

#3366AF

secondary

#C4A57A

accent

#A14ADE

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3366AF

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

Preview Lab → · Contrast checker → · Palette generator →