#3381CC#3381CC

#3381CC is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.2% C 0.138 H 250.6°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3381CC
RGB	rgb(51, 129, 204)
HSL	hsl(209, 60%, 50%)
HSV	hsv(209, 75%, 80%)
CMYK	cmyk(75%, 36.8%, 0%, 20%)
CIE-LAB	lab(52.69, 1.87, -45.60)
CIE-LCH	lch(52.69, 45.64, 272.35°)
OKLab	oklab(59.18% -0.0456 -0.1299)
OKLCH	oklch(59.18% 0.138 250.6)
XYZ	xyz(20.1105, 20.7616, 60.0625)
Luminance	0.2076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3381CC #CC7E33

analogous

#33CCCB #3381CC #3334CC

triadic

#3381CC #CC3381 #81CC33

tetradic

#3381CC #CB33CC #CC7E33 #34CC33

square

#3381CC #CB33CC #CC7E33 #34CC33

split-complementary

#3381CC #CC3334 #CCCB33

monochromatic

#1B436A #27629B #3381CC #649FD8 #95BDE4

Accessibility & contrast

On white

4.08

#3381CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#3381CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3381CC

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3381CC	#FFFFFF	#000000	##000000
##3381CC	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E85CF

Deuteranopia (green-blind)

#4777CB

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3381cc;
/* rgb */ color: rgb(51, 129, 204);
/* oklch */ color: oklch(59.2% 0.138 250.6);

Tailwind

colors: {
  custom: {
    50: '#7fa5dc',
    500: '#3381cc',
    950: '#000000',
  },
}

SCSS

$custom: #3381cc;
$custom-light: #7fa5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3381cc",
  "rgb": {
    "r": 51,
    "g": 129,
    "b": 204
  },
  "hsl": {
    "h": 209.412,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.59175,
    "c": 0.13765,
    "h": 250.6
  },
  "luminance": 0.20764
}

Semantic roles & 50–950 ramp

primary

#3381CC

secondary

#D0AD8B

accent

#9245E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3381CC

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

Preview Lab → · Contrast checker → · Palette generator →