#3987D9#3987D9

#3987D9 is a mid, vivid cyan. Relative luminance 0.232; OKLCH L 61.5% C 0.146 H 252.3°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#3987D9
RGB	rgb(57, 135, 217)
HSL	hsl(211, 68%, 54%)
HSV	hsv(211, 74%, 85%)
CMYK	cmyk(73.7%, 37.8%, 0%, 14.9%)
CIE-LAB	lab(55.28, 3.74, -48.81)
CIE-LCH	lch(55.28, 48.95, 274.38°)
OKLab	oklab(61.48% -0.0443 -0.1391)
OKLCH	oklch(61.48% 0.146 252.3)
XYZ	xyz(22.8710, 23.2050, 68.9058)
Luminance	0.2321 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987D9 #D98B39

analogous

#39D7D9 #3987D9 #3B39D9

triadic

#3987D9 #D93987 #87D939

tetradic

#3987D9 #D939D7 #D98B39 #39D93B

square

#3987D9 #D939D7 #D98B39 #39D93B

split-complementary

#3987D9 #D93B39 #D7D939

monochromatic

#184B7F #2269B3 #3987D9 #6CA6E3 #A0C5ED

Accessibility & contrast

On white

3.72

#3987D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#3987D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987D9

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987D9	#FFFFFF	#000000	##000000
##3987D9	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#618CDC

Deuteranopia (green-blind)

#487ED7

Tritanopia (blue-blind)

#009AA5

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3987d9;
/* rgb */ color: rgb(57, 135, 217);
/* oklch */ color: oklch(61.5% 0.146 252.3);

Tailwind

colors: {
  custom: {
    50: '#84a9e5',
    500: '#3987d9',
    950: '#000000',
  },
}

SCSS

$custom: #3987d9;
$custom-light: #84a9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3987d9",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 217
  },
  "hsl": {
    "h": 210.75,
    "s": 67.797,
    "l": 53.725
  },
  "oklch": {
    "l": 0.61481,
    "c": 0.14599,
    "h": 252.3
  },
  "luminance": 0.23208
}

Semantic roles & 50–950 ramp

primary

#3987D9

secondary

#D9B895

accent

#963DEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3987D9

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

Preview Lab → · Contrast checker → · Palette generator →