#3988C9#3988C9

#3988C9 is a mid, vivid cyan. Relative luminance 0.227; OKLCH L 60.8% C 0.125 H 246.7°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3988C9
RGB	rgb(57, 136, 201)
HSL	hsl(207, 57%, 51%)
HSV	hsv(207, 72%, 79%)
CMYK	cmyk(71.6%, 32.3%, 0%, 21.2%)
CIE-LAB	lab(54.75, -2.56, -40.62)
CIE-LCH	lch(54.75, 40.70, 266.39°)
OKLab	oklab(60.8% -0.0495 -0.1151)
OKLCH	oklch(60.8% 0.125 246.7)
XYZ	xyz(21.0301, 22.6929, 58.5188)
Luminance	0.2270 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988C9 #C97A39

analogous

#39C9C2 #3988C9 #3940C9

triadic

#3988C9 #C93988 #88C939

tetradic

#3988C9 #C239C9 #C97A39 #40C939

square

#3988C9 #C239C9 #C97A39 #40C939

split-complementary

#3988C9 #C93940 #C9C239

monochromatic

#1D486B #2A689B #3988C9 #69A5D6 #99C2E3

Accessibility & contrast

On white

3.79

#3988C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#3988C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988C9

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988C9	#FFFFFF	#000000	##000000
##3988C9	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B8BCC

Deuteranopia (green-blind)

#567DC8

Tritanopia (blue-blind)

#00989F

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3988c9;
/* rgb */ color: rgb(57, 136, 201);
/* oklch */ color: oklch(60.8% 0.125 246.7);

Tailwind

colors: {
  custom: {
    50: '#81aad9',
    500: '#3988c9',
    950: '#000000',
  },
}

SCSS

$custom: #3988c9;
$custom-light: #81aad9;
$custom-dark: #000000;

JSON

{
  "hex": "#3988c9",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 201
  },
  "hsl": {
    "h": 207.083,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.60799,
    "c": 0.12533,
    "h": 246.7
  },
  "luminance": 0.22695
}

Semantic roles & 50–950 ramp

primary

#3988C9

secondary

#CFAC8F

accent

#8C47E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3988C9

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

Preview Lab → · Contrast checker → · Palette generator →