#3370C7#3370C7

#3370C7 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.1% C 0.149 H 257.8°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3370C7
RGB	rgb(51, 112, 199)
HSL	hsl(215, 59%, 49%)
HSV	hsv(215, 74%, 78%)
CMYK	cmyk(74.4%, 43.7%, 0%, 22%)
CIE-LAB	lab(47.51, 10.49, -50.99)
CIE-LCH	lch(47.51, 52.06, 281.63°)
OKLab	oklab(55.05% -0.0316 -0.146)
OKLCH	oklch(55.05% 0.149 257.8)
XYZ	xyz(17.4644, 16.4137, 56.2695)
Luminance	0.1642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3370C7 #C78A33

analogous

#33BAC7 #3370C7 #4033C7

triadic

#3370C7 #C73370 #70C733

tetradic

#3370C7 #C733BA #C78A33 #33C740

square

#3370C7 #C733BA #C78A33 #33C740

split-complementary

#3370C7 #C74033 #BAC733

monochromatic

#1A3966 #275596 #3370C7 #6191D6 #91B3E3

Accessibility & contrast

On white

4.90

#3370C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3370C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3370C7

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3370C7	#FFFFFF	#000000	##FFFFFF
##3370C7	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4478CA

Deuteranopia (green-blind)

#286AC5

Tritanopia (blue-blind)

#008492

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3370c7;
/* rgb */ color: rgb(51, 112, 199);
/* oklch */ color: oklch(55.1% 0.149 257.8);

Tailwind

colors: {
  custom: {
    50: '#7e98d8',
    500: '#3370c7',
    950: '#000000',
  },
}

SCSS

$custom: #3370c7;
$custom-light: #7e98d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3370c7",
  "rgb": {
    "r": 51,
    "g": 112,
    "b": 199
  },
  "hsl": {
    "h": 215.27,
    "s": 59.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.55054,
    "c": 0.14937,
    "h": 257.8
  },
  "luminance": 0.16416
}

Semantic roles & 50–950 ramp

primary

#3370C7

secondary

#CEB188

accent

#A245E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3370C7

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

Preview Lab → · Contrast checker → · Palette generator →