#3377CC#3377CC

#3377CC is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.9% C 0.148 H 255.6°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3377CC
RGB	rgb(51, 119, 204)
HSL	hsl(213, 60%, 50%)
HSV	hsv(213, 75%, 80%)
CMYK	cmyk(75%, 41.7%, 0%, 20%)
CIE-LAB	lab(49.80, 7.98, -50.19)
CIE-LCH	lch(49.80, 50.82, 279.04°)
OKLab	oklab(56.93% -0.0367 -0.1435)
OKLCH	oklch(56.93% 0.148 255.6)
XYZ	xyz(18.8571, 18.2549, 59.6448)
Luminance	0.1826 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3377CC #CC8833

analogous

#33C4CC #3377CC #3B33CC

triadic

#3377CC #CC3377 #77CC33

tetradic

#3377CC #CC33C4 #CC8833 #33CC3B

square

#3377CC #CC33C4 #CC8833 #33CC3B

split-complementary

#3377CC #CC3B33 #C4CC33

monochromatic

#1B3E6A #275A9B #3377CC #6498D8 #95B8E4

Accessibility & contrast

On white

4.51

#3377CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3377CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3377CC

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3377CC	#FFFFFF	#000000	##000000
##3377CC	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7ECF

Deuteranopia (green-blind)

#3370CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3377cc;
/* rgb */ color: rgb(51, 119, 204);
/* oklch */ color: oklch(56.9% 0.148 255.6);

Tailwind

colors: {
  custom: {
    50: '#7f9ddc',
    500: '#3377cc',
    950: '#000000',
  },
}

SCSS

$custom: #3377cc;
$custom-light: #7f9ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3377cc",
  "rgb": {
    "r": 51,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 213.333,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.56925,
    "c": 0.14813,
    "h": 255.6
  },
  "luminance": 0.18257
}

Semantic roles & 50–950 ramp

primary

#3377CC

secondary

#D0B18B

accent

#9D45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3377CC

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

Preview Lab → · Contrast checker → · Palette generator →