#3877CB#3877CB

#3877CB is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 57.0% C 0.145 H 256.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3877CB
RGB	rgb(56, 119, 203)
HSL	hsl(214, 59%, 51%)
HSV	hsv(214, 72%, 80%)
CMYK	cmyk(72.4%, 41.4%, 0%, 20.4%)
CIE-LAB	lab(49.91, 8.27, -49.44)
CIE-LCH	lch(49.91, 50.13, 279.50°)
OKLab	oklab(57.04% -0.0337 -0.1412)
OKLCH	oklch(57.04% 0.145 256.6)
XYZ	xyz(19.0033, 18.3441, 59.0276)
Luminance	0.1835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877CB #CB8C38

analogous

#38C0CB #3877CB #4238CB

triadic

#3877CB #CB3877 #77CB38

tetradic

#3877CB #CB38C0 #CB8C38 #38CB42

square

#3877CB #CB38C0 #CB8C38 #38CB42

split-complementary

#3877CB #CB4238 #C0CB38

monochromatic

#1C3F6C #295B9D #3877CB #6998D8 #99B9E4

Accessibility & contrast

On white

4.50

#3877CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#3877CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3877CB

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877CB	#FFFFFF	#000000	##000000
##3877CB	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7ECE

Deuteranopia (green-blind)

#3670C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3877cb;
/* rgb */ color: rgb(56, 119, 203);
/* oklch */ color: oklch(57.0% 0.145 256.6);

Tailwind

colors: {
  custom: {
    50: '#819ddb',
    500: '#3877cb',
    950: '#000000',
  },
}

SCSS

$custom: #3877cb;
$custom-light: #819ddb;
$custom-dark: #000000;

JSON

{
  "hex": "#3877cb",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 203
  },
  "hsl": {
    "h": 214.286,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57036,
    "c": 0.1452,
    "h": 256.6
  },
  "luminance": 0.18346
}

Semantic roles & 50–950 ramp

primary

#3877CB

secondary

#D0B48F

accent

#9F46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3877CB

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

Preview Lab → · Contrast checker → · Palette generator →