#3377B3#3377B3

#3377B3 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.4% C 0.116 H 248.2°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3377B3
RGB	rgb(51, 119, 179)
HSL	hsl(208, 56%, 45%)
HSV	hsv(208, 72%, 70%)
CMYK	cmyk(71.5%, 33.5%, 0%, 29.8%)
CIE-LAB	lab(48.45, -1.17, -37.97)
CIE-LCH	lch(48.45, 37.99, 268.23°)
OKLab	oklab(55.43% -0.043 -0.1077)
OKLCH	oklch(55.43% 0.116 248.2)
XYZ	xyz(16.0957, 17.1504, 45.1012)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3377B3 #B36F33

analogous

#33B3AF #3377B3 #3337B3

triadic

#3377B3 #B33377 #77B333

tetradic

#3377B3 #AF33B3 #B36F33 #37B333

square

#3377B3 #AF33B3 #B36F33 #37B333

split-complementary

#3377B3 #B33337 #B3AF33

monochromatic

#183854 #255783 #3377B3 #5595CE #84B3DC

Accessibility & contrast

On white

4.74

#3377B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3377B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3377B3

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3377B3	#FFFFFF	#000000	##FFFFFF
##3377B3	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7AB6

Deuteranopia (green-blind)

#4A6EB2

Tritanopia (blue-blind)

#00858D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3377b3;
/* rgb */ color: rgb(51, 119, 179);
/* oklch */ color: oklch(55.4% 0.116 248.2);

Tailwind

colors: {
  custom: {
    50: '#7a9dca',
    500: '#3377b3',
    950: '#000000',
  },
}

SCSS

$custom: #3377b3;
$custom-light: #7a9dca;
$custom-dark: #000000;

JSON

{
  "hex": "#3377b3",
  "rgb": {
    "r": 51,
    "g": 119,
    "b": 179
  },
  "hsl": {
    "h": 208.125,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.55425,
    "c": 0.11596,
    "h": 248.2
  },
  "luminance": 0.17152
}

Semantic roles & 50–950 ramp

primary

#3377B3

secondary

#C69F7C

accent

#8F49DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3377B3

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

Preview Lab → · Contrast checker → · Palette generator →