#3370C9#3370C9

#3370C9 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.2% C 0.152 H 258.1°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3370C9
RGB	rgb(51, 112, 201)
HSL	hsl(216, 60%, 49%)
HSV	hsv(216, 75%, 79%)
CMYK	cmyk(74.6%, 44.3%, 0%, 21.2%)
CIE-LAB	lab(47.63, 11.24, -51.95)
CIE-LCH	lch(47.63, 53.15, 282.21°)
OKLab	oklab(55.19% -0.0313 -0.1488)
OKLCH	oklch(55.19% 0.152 258.1)
XYZ	xyz(17.6982, 16.5072, 57.5005)
Luminance	0.1651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370C9 #C98C33

analogous

#33BBC9 #3370C9 #4133C9

triadic

#3370C9 #C93370 #70C933

tetradic

#3370C9 #C933BB #C98C33 #33C941

square

#3370C9 #C933BB #C98C33 #33C941

split-complementary

#3370C9 #C94133 #BBC933

monochromatic

#1A3A67 #275598 #3370C9 #6292D7 #93B4E4

Accessibility & contrast

On white

4.88

#3370C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#3370C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370C9

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370C9	#FFFFFF	#000000	##FFFFFF
##3370C9	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4378CC

Deuteranopia (green-blind)

#256BC7

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3370c9;
/* rgb */ color: rgb(51, 112, 201);
/* oklch */ color: oklch(55.2% 0.152 258.1);

Tailwind

colors: {
  custom: {
    50: '#7f98da',
    500: '#3370c9',
    950: '#000000',
  },
}

SCSS

$custom: #3370c9;
$custom-light: #7f98da;
$custom-dark: #000000;

JSON

{
  "hex": "#3370c9",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 201
  },
  "hsl": {
    "h": 215.6,
    "s": 59.524,
    "l": 49.412
  },
  "oklch": {
    "l": 0.55186,
    "c": 0.15204,
    "h": 258.1
  },
  "luminance": 0.16509
}

Semantic roles & 50–950 ramp

primary

#3370C9

secondary

#CFB289

accent

#A345E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0D15

muted

#7C7E83

Preview Lab

Preview with #3370C9

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

Preview Lab → · Contrast checker → · Palette generator →