#3377B4#3377B4

#3377B4 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.5% C 0.117 H 248.6°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3377B4
RGB	rgb(51, 119, 180)
HSL	hsl(208, 56%, 45%)
HSV	hsv(208, 72%, 71%)
CMYK	cmyk(71.7%, 33.9%, 0%, 29.4%)
CIE-LAB	lab(48.50, -0.81, -38.47)
CIE-LCH	lch(48.50, 38.48, 268.79°)
OKLab	oklab(55.48% -0.0427 -0.1091)
OKLCH	oklch(55.48% 0.117 248.6)
XYZ	xyz(16.1972, 17.1910, 45.6357)
Luminance	0.1719 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3377B4 #B47033

analogous

#33B4B0 #3377B4 #3337B4

triadic

#3377B4 #B43377 #77B433

tetradic

#3377B4 #B033B4 #B47033 #37B433

square

#3377B4 #B033B4 #B47033 #37B433

split-complementary

#3377B4 #B43337 #B4B033

monochromatic

#183855 #255784 #3377B4 #5595CF #85B3DC

Accessibility & contrast

On white

4.73

#3377B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3377B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3377B4

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3377B4	#FFFFFF	#000000	##FFFFFF
##3377B4	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7AB7

Deuteranopia (green-blind)

#496EB3

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3377b4;
/* rgb */ color: rgb(51, 119, 180);
/* oklch */ color: oklch(55.5% 0.117 248.6);

Tailwind

colors: {
  custom: {
    50: '#7b9dcb',
    500: '#3377b4',
    950: '#000000',
  },
}

SCSS

$custom: #3377b4;
$custom-light: #7b9dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3377b4",
  "rgb": {
    "r": 51,
    "g": 119,
    "b": 180
  },
  "hsl": {
    "h": 208.372,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.55482,
    "c": 0.1172,
    "h": 248.6
  },
  "luminance": 0.17193
}

Semantic roles & 50–950 ramp

primary

#3377B4

secondary

#C69F7D

accent

#9049DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3377B4

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

Preview Lab → · Contrast checker → · Palette generator →