#3357BB#3357BB

#3357BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.163 H 265.7°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#3357BB
RGB	rgb(51, 87, 187)
HSL	hsl(224, 57%, 47%)
HSV	hsv(224, 73%, 73%)
CMYK	cmyk(72.7%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.76, 22.07, -56.52)
CIE-LCH	lch(39.76, 60.68, 291.33°)
OKLab	oklab(48.87% -0.0123 -0.1627)
OKLCH	oklch(48.87% 0.163 265.7)
XYZ	xyz(13.7399, 11.1066, 48.4237)
Luminance	0.1111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3357BB #BB9733

analogous

#339BBB #3357BB #5333BB

triadic

#3357BB #BB3357 #57BB33

tetradic

#3357BB #BB339B #BB9733 #33BB53

square

#3357BB #BB339B #BB9733 #33BB53

split-complementary

#3357BB #BB5333 #9BBB33

monochromatic

#192A5B #26418B #3357BB #5979D2 #89A0DF

Accessibility & contrast

On white

6.52

#3357BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3357BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3357BB

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3357BB	#FFFFFF	#000000	##FFFFFF
##3357BB	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C64BF

Deuteranopia (green-blind)

#0058B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3357bb;
/* rgb */ color: rgb(51, 87, 187);
/* oklch */ color: oklch(48.9% 0.163 265.7);

Tailwind

colors: {
  custom: {
    50: '#7d85d0',
    500: '#3357bb',
    950: '#000000',
  },
}

SCSS

$custom: #3357bb;
$custom-light: #7d85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3357bb",
  "rgb": {
    "r": 51,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 224.118,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48866,
    "c": 0.16316,
    "h": 265.7
  },
  "luminance": 0.11108
}

Semantic roles & 50–950 ramp

primary

#3357BB

secondary

#C9B681

accent

#B847E0

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3357BB

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

Preview Lab → · Contrast checker → · Palette generator →