#3370B9#3370B9

#3370B9 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.2% C 0.131 H 254.6°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#3370B9
RGB	rgb(51, 112, 185)
HSL	hsl(213, 57%, 46%)
HSV	hsv(213, 72%, 73%)
CMYK	cmyk(72.4%, 39.5%, 0%, 27.5%)
CIE-LAB	lab(46.70, 5.31, -44.21)
CIE-LCH	lch(46.70, 44.53, 276.85°)
OKLab	oklab(54.16% -0.0347 -0.1261)
OKLCH	oklch(54.16% 0.131 254.6)
XYZ	xyz(15.9131, 15.7932, 48.0993)
Luminance	0.1580 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370B9 #B97C33

analogous

#33B3B9 #3370B9 #3933B9

triadic

#3370B9 #B93370 #70B933

tetradic

#3370B9 #B933B3 #B97C33 #33B939

square

#3370B9 #B933B3 #B97C33 #33B939

split-complementary

#3370B9 #B93933 #B3B933

monochromatic

#193659 #265389 #3370B9 #588FD1 #88AFDE

Accessibility & contrast

On white

5.05

#3370B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#3370B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370B9

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370B9	#FFFFFF	#000000	##FFFFFF
##3370B9	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E75BC

Deuteranopia (green-blind)

#3969B8

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3370b9;
/* rgb */ color: rgb(51, 112, 185);
/* oklch */ color: oklch(54.2% 0.131 254.6);

Tailwind

colors: {
  custom: {
    50: '#7b98ce',
    500: '#3370b9',
    950: '#000000',
  },
}

SCSS

$custom: #3370b9;
$custom-light: #7b98ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3370b9",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 185
  },
  "hsl": {
    "h": 212.687,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.54162,
    "c": 0.13075,
    "h": 254.6
  },
  "luminance": 0.15795
}

Semantic roles & 50–950 ramp

primary

#3370B9

secondary

#C8A780

accent

#9B48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3370B9

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

Preview Lab → · Contrast checker → · Palette generator →