#3370CA#3370CA

#3370CA is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.3% C 0.153 H 258.3°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3370CA
RGB	rgb(51, 112, 202)
HSL	hsl(216, 60%, 50%)
HSV	hsv(216, 75%, 79%)
CMYK	cmyk(74.8%, 44.6%, 0%, 20.8%)
CIE-LAB	lab(47.69, 11.61, -52.42)
CIE-LCH	lch(47.69, 53.69, 282.49°)
OKLab	oklab(55.25% -0.0311 -0.1502)
OKLCH	oklch(55.25% 0.153 258.3)
XYZ	xyz(17.8162, 16.5544, 58.1220)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370CA #CA8D33

analogous

#33BBCA #3370CA #4233CA

triadic

#3370CA #CA3370 #70CA33

tetradic

#3370CA #CA33BB #CA8D33 #33CA42

square

#3370CA #CA33BB #CA8D33 #33CA42

split-complementary

#3370CA #CA4233 #BBCA33

monochromatic

#1A3A68 #275599 #3370CA #6392D8 #94B4E4

Accessibility & contrast

On white

4.87

#3370CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3370CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370CA

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370CA	#FFFFFF	#000000	##FFFFFF
##3370CA	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4279CD

Deuteranopia (green-blind)

#236BC8

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3370ca;
/* rgb */ color: rgb(51, 112, 202);
/* oklch */ color: oklch(55.3% 0.153 258.3);

Tailwind

colors: {
  custom: {
    50: '#7f98db',
    500: '#3370ca',
    950: '#000000',
  },
}

SCSS

$custom: #3370ca;
$custom-light: #7f98db;
$custom-dark: #000000;

JSON

{
  "hex": "#3370ca",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 202
  },
  "hsl": {
    "h": 215.762,
    "s": 59.684,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55252,
    "c": 0.15337,
    "h": 258.3
  },
  "luminance": 0.16556
}

Semantic roles & 50–950 ramp

primary

#3370CA

secondary

#CFB38A

accent

#A345E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0D15

muted

#7C7E83

Preview Lab

Preview with #3370CA

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

Preview Lab → · Contrast checker → · Palette generator →