#3370B5#3370B5

#3370B5 is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 53.9% C 0.125 H 253.5°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3370B5
RGB	rgb(51, 112, 181)
HSL	hsl(212, 56%, 45%)
HSV	hsv(212, 72%, 71%)
CMYK	cmyk(71.8%, 38.1%, 0%, 29%)
CIE-LAB	lab(46.48, 3.84, -42.24)
CIE-LCH	lch(46.48, 42.42, 275.19°)
OKLab	oklab(53.92% -0.0356 -0.1203)
OKLCH	oklch(53.92% 0.125 253.5)
XYZ	xyz(15.4968, 15.6267, 45.9066)
Luminance	0.1563 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370B5 #B57833

analogous

#33B1B5 #3370B5 #3733B5

triadic

#3370B5 #B53370 #70B533

tetradic

#3370B5 #B533B1 #B57833 #33B537

square

#3370B5 #B533B1 #B57833 #33B537

split-complementary

#3370B5 #B53733 #B1B533

monochromatic

#183556 #265285 #3370B5 #568FCF #86AFDD

Accessibility & contrast

On white

5.09

#3370B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#3370B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370B5

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370B5	#FFFFFF	#000000	##FFFFFF
##3370B5	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5075B8

Deuteranopia (green-blind)

#3D69B4

Tritanopia (blue-blind)

#00808A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3370b5;
/* rgb */ color: rgb(51, 112, 181);
/* oklch */ color: oklch(53.9% 0.125 253.5);

Tailwind

colors: {
  custom: {
    50: '#7b98cb',
    500: '#3370b5',
    950: '#000000',
  },
}

SCSS

$custom: #3370b5;
$custom-light: #7b98cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3370b5",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 181
  },
  "hsl": {
    "h": 211.846,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53917,
    "c": 0.12547,
    "h": 253.5
  },
  "luminance": 0.15628
}

Semantic roles & 50–950 ramp

primary

#3370B5

secondary

#C6A47D

accent

#9948DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #3370B5

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

Preview Lab → · Contrast checker → · Palette generator →