#3988BC#3988BC

#3988BC is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.1% C 0.110 H 241.0°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3988BC
RGB	rgb(57, 136, 188)
HSL	hsl(204, 53%, 48%)
HSV	hsv(204, 70%, 74%)
CMYK	cmyk(69.7%, 27.7%, 0%, 26.3%)
CIE-LAB	lab(54.14, -7.10, -34.19)
CIE-LCH	lch(54.14, 34.92, 258.26°)
OKLab	oklab(60.11% -0.0535 -0.0964)
OKLCH	oklch(60.11% 0.11 241)
XYZ	xyz(19.5651, 22.1069, 50.8031)
Luminance	0.2211 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3988BC #BC6D39

analogous

#39BCAE #3988BC #3946BC

triadic

#3988BC #BC3988 #88BC39

tetradic

#3988BC #AE39BC #BC6D39 #46BC39

square

#3988BC #AE39BC #BC6D39 #46BC39

split-complementary

#3988BC #BC3946 #BCAE39

monochromatic

#1D445E #2B668D #3988BC #63A4D0 #92C0DE

Accessibility & contrast

On white

3.87

#3988BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#3988BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988BC

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3988BC	#FFFFFF	#000000	##000000
##3988BC	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7088BE

Deuteranopia (green-blind)

#5E7CBB

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3988bc;
/* rgb */ color: rgb(57, 136, 188);
/* oklch */ color: oklch(60.1% 0.110 241.0);

Tailwind

colors: {
  custom: {
    50: '#7faad0',
    500: '#3988bc',
    950: '#000000',
  },
}

SCSS

$custom: #3988bc;
$custom-light: #7faad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3988bc",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 188
  },
  "hsl": {
    "h": 203.817,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.60113,
    "c": 0.11028,
    "h": 241
  },
  "luminance": 0.22109
}

Semantic roles & 50–950 ramp

primary

#3988BC

secondary

#C9A288

accent

#854BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3988BC

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

Preview Lab → · Contrast checker → · Palette generator →