#3371B3#3371B3

#3371B3 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.0% C 0.122 H 252.3°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3371B3
RGB	rgb(51, 113, 179)
HSL	hsl(211, 56%, 45%)
HSV	hsv(211, 72%, 70%)
CMYK	cmyk(71.5%, 36.9%, 0%, 29.8%)
CIE-LAB	lab(46.67, 2.49, -40.78)
CIE-LCH	lch(46.67, 40.86, 273.49°)
OKLab	oklab(54.03% -0.0371 -0.116)
OKLCH	oklch(54.03% 0.122 252.3)
XYZ	xyz(15.4040, 15.7671, 44.8706)
Luminance	0.1577 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3371B3 #B37533

analogous

#33B1B3 #3371B3 #3533B3

triadic

#3371B3 #B33371 #71B333

tetradic

#3371B3 #B333B1 #B37533 #33B335

square

#3371B3 #B333B1 #B37533 #33B335

split-complementary

#3371B3 #B33533 #B1B333

monochromatic

#183554 #255383 #3371B3 #5590CE #84AFDC

Accessibility & contrast

On white

5.06

#3371B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#3371B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3371B3

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3371B3	#FFFFFF	#000000	##FFFFFF
##3371B3	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5375B6

Deuteranopia (green-blind)

#4069B2

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3371b3;
/* rgb */ color: rgb(51, 113, 179);
/* oklch */ color: oklch(54.0% 0.122 252.3);

Tailwind

colors: {
  custom: {
    50: '#7a99ca',
    500: '#3371b3',
    950: '#000000',
  },
}

SCSS

$custom: #3371b3;
$custom-light: #7a99ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3371b3",
  "rgb": {
    "r": 51,
    "g": 113,
    "b": 179
  },
  "hsl": {
    "h": 210.938,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.54028,
    "c": 0.1218,
    "h": 252.3
  },
  "luminance": 0.15769
}

Semantic roles & 50–950 ramp

primary

#3371B3

secondary

#C6A27C

accent

#9649DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3371B3

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

Preview Lab → · Contrast checker → · Palette generator →