#3877B8#3877B8

#3877B8 is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.9% C 0.120 H 251.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3877B8
RGB	rgb(56, 119, 184)
HSL	hsl(210, 53%, 47%)
HSV	hsv(210, 70%, 72%)
CMYK	cmyk(69.6%, 35.3%, 0%, 27.8%)
CIE-LAB	lab(48.88, 1.39, -40.18)
CIE-LCH	lch(48.88, 40.20, 271.98°)
OKLab	oklab(55.89% -0.0383 -0.1141)
OKLCH	oklch(55.89% 0.12 251.5)
XYZ	xyz(16.8762, 17.4933, 47.8252)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877B8 #B87938

analogous

#38B7B8 #3877B8 #3938B8

triadic

#3877B8 #B83877 #77B838

tetradic

#3877B8 #B838B7 #B87938 #38B839

square

#3877B8 #B838B7 #B87938 #38B839

split-complementary

#3877B8 #B83938 #B7B838

monochromatic

#1B3A5A #2A5989 #3877B8 #5F96CE #8EB5DD

Accessibility & contrast

On white

4.67

#3877B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3877B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3877B8

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877B8	#FFFFFF	#000000	##FFFFFF
##3877B8	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7BBB

Deuteranopia (green-blind)

#486FB7

Tritanopia (blue-blind)

#00868F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3877b8;
/* rgb */ color: rgb(56, 119, 184);
/* oklch */ color: oklch(55.9% 0.120 251.5);

Tailwind

colors: {
  custom: {
    50: '#7d9dcd',
    500: '#3877b8',
    950: '#000000',
  },
}

SCSS

$custom: #3877b8;
$custom-light: #7d9dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3877b8",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 184
  },
  "hsl": {
    "h": 210.469,
    "s": 53.333,
    "l": 47.059
  },
  "oklch": {
    "l": 0.55892,
    "c": 0.12033,
    "h": 251.5
  },
  "luminance": 0.17495
}

Semantic roles & 50–950 ramp

primary

#3877B8

secondary

#C7A685

accent

#954BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3877B8

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

Preview Lab → · Contrast checker → · Palette generator →