#3371BB#3371BB

#3371BB is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.5% C 0.132 H 254.6°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3371BB
RGB	rgb(51, 113, 187)
HSL	hsl(213, 57%, 47%)
HSV	hsv(213, 73%, 73%)
CMYK	cmyk(72.7%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(47.11, 5.43, -44.73)
CIE-LCH	lch(47.11, 45.06, 276.92°)
OKLab	oklab(54.51% -0.0351 -0.1276)
OKLCH	oklch(54.51% 0.132 254.6)
XYZ	xyz(16.2367, 16.1001, 49.2560)
Luminance	0.1610 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3371BB #BB7D33

analogous

#33B5BB #3371BB #3933BB

triadic

#3371BB #BB3371 #71BB33

tetradic

#3371BB #BB33B5 #BB7D33 #33BB39

square

#3371BB #BB33B5 #BB7D33 #33BB39

split-complementary

#3371BB #BB3933 #B5BB33

monochromatic

#19375B #26548B #3371BB #5990D2 #89B0DF

Accessibility & contrast

On white

4.98

#3371BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#3371BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3371BB

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3371BB	#FFFFFF	#000000	##FFFFFF
##3371BB	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77BE

Deuteranopia (green-blind)

#396ABA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3371bb;
/* rgb */ color: rgb(51, 113, 187);
/* oklch */ color: oklch(54.5% 0.132 254.6);

Tailwind

colors: {
  custom: {
    50: '#7c99d0',
    500: '#3371bb',
    950: '#000000',
  },
}

SCSS

$custom: #3371bb;
$custom-light: #7c99d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3371bb",
  "rgb": {
    "r": 51,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 212.647,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54513,
    "c": 0.13232,
    "h": 254.6
  },
  "luminance": 0.16102
}

Semantic roles & 50–950 ramp

primary

#3371BB

secondary

#C9A881

accent

#9B47E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3371BB

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

Preview Lab → · Contrast checker → · Palette generator →