#3987AB#3987AB

#3987AB is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 59.0% C 0.093 H 231.4°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3987AB
RGB	rgb(57, 135, 171)
HSL	hsl(199, 50%, 45%)
HSV	hsv(199, 67%, 67%)
CMYK	cmyk(66.7%, 21.1%, 0%, 32.9%)
CIE-LAB	lab(53.10, -12.31, -26.07)
CIE-LCH	lch(53.10, 28.83, 244.71°)
OKLab	oklab(59.04% -0.0583 -0.073)
OKLCH	oklch(59.04% 0.093 231.4)
XYZ	xyz(17.6991, 21.1362, 41.6671)
Luminance	0.2114 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987AB #AB5D39

analogous

#39AB96 #3987AB #394EAB

triadic

#3987AB #AB3987 #87AB39

tetradic

#3987AB #9639AB #AB5D39 #4EAB39

square

#3987AB #9639AB #AB5D39 #4EAB39

split-complementary

#3987AB #AB394E #AB9639

monochromatic

#1A3F4F #2A637D #3987AB #59A5C8 #87BED7

Accessibility & contrast

On white

4.02

#3987AB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#3987AB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987AB

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987AB	#FFFFFF	#000000	##000000
##3987AB	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7585AD

Deuteranopia (green-blind)

#657AAA

Tritanopia (blue-blind)

#009193

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3987ab;
/* rgb */ color: rgb(57, 135, 171);
/* oklch */ color: oklch(59.0% 0.093 231.4);

Tailwind

colors: {
  custom: {
    50: '#7caac4',
    500: '#3987ab',
    950: '#000000',
  },
}

SCSS

$custom: #3987ab;
$custom-light: #7caac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3987ab",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 171
  },
  "hsl": {
    "h": 198.947,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.5904,
    "c": 0.09347,
    "h": 231.4
  },
  "luminance": 0.21138
}

Semantic roles & 50–950 ramp

primary

#3987AB

secondary

#C1947F

accent

#7A4EDA

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #3987AB

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

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