#3370B2#3370B2

#3370B2 is a mid, vivid cyan. Relative luminance 0.155; OKLCH L 53.7% C 0.122 H 252.6°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3370B2
RGB	rgb(51, 112, 178)
HSL	hsl(211, 55%, 45%)
HSV	hsv(211, 71%, 70%)
CMYK	cmyk(71.3%, 37.1%, 0%, 30.2%)
CIE-LAB	lab(46.32, 2.74, -40.76)
CIE-LCH	lch(46.32, 40.85, 273.84°)
OKLab	oklab(53.74% -0.0364 -0.1159)
OKLCH	oklch(53.74% 0.122 252.6)
XYZ	xyz(15.1923, 15.5049, 44.3029)
Luminance	0.1551 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370B2 #B27533

analogous

#33B0B2 #3370B2 #3533B2

triadic

#3370B2 #B23370 #70B233

tetradic

#3370B2 #B233B0 #B27533 #33B235

square

#3370B2 #B233B0 #B27533 #33B235

split-complementary

#3370B2 #B23533 #B0B233

monochromatic

#183453 #255282 #3370B2 #548FCE #84AEDC

Accessibility & contrast

On white

5.12

#3370B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3370B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370B2

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370B2	#FFFFFF	#000000	##FFFFFF
##3370B2	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5274B5

Deuteranopia (green-blind)

#3F68B1

Tritanopia (blue-blind)

#007F88

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3370b2;
/* rgb */ color: rgb(51, 112, 178);
/* oklch */ color: oklch(53.7% 0.122 252.6);

Tailwind

colors: {
  custom: {
    50: '#7a98c9',
    500: '#3370b2',
    950: '#000000',
  },
}

SCSS

$custom: #3370b2;
$custom-light: #7a98c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3370b2",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 178
  },
  "hsl": {
    "h": 211.181,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.53737,
    "c": 0.12153,
    "h": 252.6
  },
  "luminance": 0.15507
}

Semantic roles & 50–950 ramp

primary

#3370B2

secondary

#C5A27C

accent

#9749DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3370B2

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

Preview Lab → · Contrast checker → · Palette generator →