#336BBB#336BBB

#336BBB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.2% C 0.139 H 257.7°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#336BBB
RGB	rgb(51, 107, 187)
HSL	hsl(215, 57%, 47%)
HSV	hsv(215, 73%, 73%)
CMYK	cmyk(72.7%, 42.8%, 0%, 26.7%)
CIE-LAB	lab(45.37, 9.18, -47.50)
CIE-LCH	lch(45.37, 48.38, 280.94°)
OKLab	oklab(53.16% -0.0296 -0.1358)
OKLCH	oklch(53.16% 0.139 257.7)
XYZ	xyz(15.5893, 14.8053, 49.0402)
Luminance	0.1481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#336BBB #BB8333

analogous

#33AFBB #336BBB #3F33BB

triadic

#336BBB #BB336B #6BBB33

tetradic

#336BBB #BB33AF #BB8333 #33BB3F

square

#336BBB #BB33AF #BB8333 #33BB3F

split-complementary

#336BBB #BB3F33 #AFBB33

monochromatic

#19345B #264F8B #336BBB #598BD2 #89ADDF

Accessibility & contrast

On white

5.30

#336BBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#336BBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #336BBB

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##336BBB	#FFFFFF	#000000	##FFFFFF
##336BBB	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4472BE

Deuteranopia (green-blind)

#2C66B9

Tritanopia (blue-blind)

#007E8A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #336bbb;
/* rgb */ color: rgb(51, 107, 187);
/* oklch */ color: oklch(53.2% 0.139 257.7);

Tailwind

colors: {
  custom: {
    50: '#7c94d0',
    500: '#336bbb',
    950: '#000000',
  },
}

SCSS

$custom: #336bbb;
$custom-light: #7c94d0;
$custom-dark: #000000;

JSON

{
  "hex": "#336bbb",
  "rgb": {
    "r": 51,
    "g": 107,
    "b": 187
  },
  "hsl": {
    "h": 215.294,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53161,
    "c": 0.13899,
    "h": 257.7
  },
  "luminance": 0.14807
}

Semantic roles & 50–950 ramp

primary

#336BBB

secondary

#C9AB81

accent

#A147E0

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #336BBB

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

Preview Lab → · Contrast checker → · Palette generator →