#3377BB#3377BB

#3377BB is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.9% C 0.126 H 251.1°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3377BB
RGB	rgb(51, 119, 187)
HSL	hsl(210, 57%, 47%)
HSV	hsv(210, 73%, 73%)
CMYK	cmyk(72.7%, 36.4%, 0%, 26.7%)
CIE-LAB	lab(48.86, 1.73, -41.94)
CIE-LCH	lch(48.86, 41.97, 272.37°)
OKLab	oklab(55.89% -0.0408 -0.1193)
OKLCH	oklch(55.89% 0.126 251.1)
XYZ	xyz(16.9283, 17.4834, 49.4865)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3377BB #BB7733

analogous

#33BBBB #3377BB #3333BB

triadic

#3377BB #BB3377 #77BB33

tetradic

#3377BB #BB33BB #BB7733 #33BB33

square

#3377BB #BB33BB #BB7733 #33BB33

split-complementary

#3377BB #BB3333 #BBBB33

monochromatic

#193A5B #26588B #3377BB #5996D2 #89B4DF

Accessibility & contrast

On white

4.67

#3377BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3377BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3377BB

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3377BB	#FFFFFF	#000000	##FFFFFF
##3377BB	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBE

Deuteranopia (green-blind)

#446EBA

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3377bb;
/* rgb */ color: rgb(51, 119, 187);
/* oklch */ color: oklch(55.9% 0.126 251.1);

Tailwind

colors: {
  custom: {
    50: '#7c9dd0',
    500: '#3377bb',
    950: '#000000',
  },
}

SCSS

$custom: #3377bb;
$custom-light: #7c9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3377bb",
  "rgb": {
    "r": 51,
    "g": 119,
    "b": 187
  },
  "hsl": {
    "h": 210,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55886,
    "c": 0.12608,
    "h": 251.1
  },
  "luminance": 0.17485
}

Semantic roles & 50–950 ramp

primary

#3377BB

secondary

#C9A581

accent

#9447E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3377BB

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

Preview Lab → · Contrast checker → · Palette generator →