#3370BD#3370BD

#3370BD is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.4% C 0.136 H 255.6°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3370BD
RGB	rgb(51, 112, 189)
HSL	hsl(213, 58%, 47%)
HSV	hsv(213, 73%, 74%)
CMYK	cmyk(73%, 40.7%, 0%, 25.9%)
CIE-LAB	lab(46.93, 6.79, -46.17)
CIE-LCH	lch(46.93, 46.66, 278.36°)
OKLab	oklab(54.41% -0.0337 -0.1318)
OKLCH	oklch(54.41% 0.136 255.6)
XYZ	xyz(16.3413, 15.9645, 50.3545)
Luminance	0.1597 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370BD #BD8033

analogous

#33B5BD #3370BD #3B33BD

triadic

#3370BD #BD3370 #70BD33

tetradic

#3370BD #BD33B5 #BD8033 #33BD3B

square

#3370BD #BD33B5 #BD8033 #33BD3B

split-complementary

#3370BD #BD3B33 #B5BD33

monochromatic

#19375D #26538D #3370BD #5B90D3 #8BB0E0

Accessibility & contrast

On white

5.01

#3370BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3370BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370BD

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370BD	#FFFFFF	#000000	##FFFFFF
##3370BD	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C76C0

Deuteranopia (green-blind)

#3569BB

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3370bd;
/* rgb */ color: rgb(51, 112, 189);
/* oklch */ color: oklch(54.4% 0.136 255.6);

Tailwind

colors: {
  custom: {
    50: '#7c98d1',
    500: '#3370bd',
    950: '#000000',
  },
}

SCSS

$custom: #3370bd;
$custom-light: #7c98d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3370bd",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 189
  },
  "hsl": {
    "h": 213.478,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54411,
    "c": 0.13606,
    "h": 255.6
  },
  "luminance": 0.15966
}

Semantic roles & 50–950 ramp

primary

#3370BD

secondary

#CAAA82

accent

#9D47E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3370BD

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

Preview Lab → · Contrast checker → · Palette generator →