#3370BC#3370BC

#3370BC is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.3% C 0.135 H 255.4°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3370BC
RGB	rgb(51, 112, 188)
HSL	hsl(213, 57%, 47%)
HSV	hsv(213, 73%, 74%)
CMYK	cmyk(72.9%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(46.87, 6.42, -45.68)
CIE-LCH	lch(46.87, 46.13, 278.00°)
OKLab	oklab(54.35% -0.034 -0.1304)
OKLCH	oklch(54.35% 0.135 255.4)
XYZ	xyz(16.2332, 15.9212, 49.7848)
Luminance	0.1592 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370BC #BC7F33

analogous

#33B5BC #3370BC #3B33BC

triadic

#3370BC #BC3370 #70BC33

tetradic

#3370BC #BC33B5 #BC7F33 #33BC3B

square

#3370BC #BC33B5 #BC7F33 #33BC3B

split-complementary

#3370BC #BC3B33 #B5BC33

monochromatic

#19375C #26538C #3370BC #5A90D2 #8AB0DF

Accessibility & contrast

On white

5.02

#3370BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#3370BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370BC

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370BC	#FFFFFF	#000000	##FFFFFF
##3370BC	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C76BF

Deuteranopia (green-blind)

#3669BA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3370bc;
/* rgb */ color: rgb(51, 112, 188);
/* oklch */ color: oklch(54.3% 0.135 255.4);

Tailwind

colors: {
  custom: {
    50: '#7c98d0',
    500: '#3370bc',
    950: '#000000',
  },
}

SCSS

$custom: #3370bc;
$custom-light: #7c98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3370bc",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 213.285,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.54348,
    "c": 0.13473,
    "h": 255.4
  },
  "luminance": 0.15923
}

Semantic roles & 50–950 ramp

primary

#3370BC

secondary

#C9A981

accent

#9C47E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3370BC

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

Preview Lab → · Contrast checker → · Palette generator →