#3988BB#3988BB

#3988BB is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.1% C 0.109 H 240.5°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#3988BB
RGB	rgb(57, 136, 187)
HSL	hsl(204, 53%, 48%)
HSV	hsv(204, 70%, 73%)
CMYK	cmyk(69.5%, 27.3%, 0%, 26.7%)
CIE-LAB	lab(54.09, -7.45, -33.69)
CIE-LCH	lch(54.09, 34.51, 257.53°)
OKLab	oklab(60.06% -0.0538 -0.095)
OKLCH	oklch(60.06% 0.109 240.5)
XYZ	xyz(19.4577, 22.0639, 50.2374)
Luminance	0.2207 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988BB #BB6C39

analogous

#39BBAD #3988BB #3947BB

triadic

#3988BB #BB3988 #88BB39

tetradic

#3988BB #AD39BB #BB6C39 #47BB39

square

#3988BB #AD39BB #BB6C39 #47BB39

split-complementary

#3988BB #BB3947 #BBAD39

monochromatic

#1C445D #2B668C #3988BB #62A4CF #91BFDD

Accessibility & contrast

On white

3.88

#3988BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#3988BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988BB

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988BB	#FFFFFF	#000000	##000000
##3988BB	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7088BD

Deuteranopia (green-blind)

#5F7CBA

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3988bb;
/* rgb */ color: rgb(57, 136, 187);
/* oklch */ color: oklch(60.1% 0.109 240.5);

Tailwind

colors: {
  custom: {
    50: '#7faacf',
    500: '#3988bb',
    950: '#000000',
  },
}

SCSS

$custom: #3988bb;
$custom-light: #7faacf;
$custom-dark: #000000;

JSON

{
  "hex": "#3988bb",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 187
  },
  "hsl": {
    "h": 203.538,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.60062,
    "c": 0.10918,
    "h": 240.5
  },
  "luminance": 0.22066
}

Semantic roles & 50–950 ramp

primary

#3988BB

secondary

#C8A187

accent

#844BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3988BB

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

Preview Lab → · Contrast checker → · Palette generator →