#3888CB#3888CB

#3888CB is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 60.9% C 0.128 H 247.3°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#3888CB
RGB	rgb(56, 136, 203)
HSL	hsl(207, 59%, 51%)
HSV	hsv(207, 72%, 80%)
CMYK	cmyk(72.4%, 33%, 0%, 20.4%)
CIE-LAB	lab(54.82, -1.99, -41.64)
CIE-LCH	lch(54.82, 41.69, 267.26°)
OKLab	oklab(60.88% -0.0495 -0.1181)
OKLCH	oklch(60.88% 0.128 247.3)
XYZ	xyz(21.2104, 22.7585, 59.7633)
Luminance	0.2276 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3888CB #CB7B38

analogous

#38CBC5 #3888CB #383ECB

triadic

#3888CB #CB3888 #88CB38

tetradic

#3888CB #C538CB #CB7B38 #3ECB38

square

#3888CB #C538CB #CB7B38 #3ECB38

split-complementary

#3888CB #CB383E #CBC538

monochromatic

#1C486C #29689D #3888CB #69A5D8 #99C2E4

Accessibility & contrast

On white

3.78

#3888CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#3888CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3888CB

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3888CB	#FFFFFF	#000000	##000000
##3888CB	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A8BCE

Deuteranopia (green-blind)

#557DCA

Tritanopia (blue-blind)

#0098A0

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3888cb;
/* rgb */ color: rgb(56, 136, 203);
/* oklch */ color: oklch(60.9% 0.128 247.3);

Tailwind

colors: {
  custom: {
    50: '#81aadb',
    500: '#3888cb',
    950: '#000000',
  },
}

SCSS

$custom: #3888cb;
$custom-light: #81aadb;
$custom-dark: #000000;

JSON

{
  "hex": "#3888cb",
  "rgb": {
    "r": 56,
    "g": 136,
    "b": 203
  },
  "hsl": {
    "h": 207.347,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.60877,
    "c": 0.1281,
    "h": 247.3
  },
  "luminance": 0.22761
}

Semantic roles & 50–950 ramp

primary

#3888CB

secondary

#D0AD8F

accent

#8D46E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3888CB

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

Preview Lab → · Contrast checker → · Palette generator →