#3987B4#3987B4

#3987B4 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.5% C 0.102 H 237.4°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3987B4
RGB	rgb(57, 135, 180)
HSL	hsl(202, 52%, 46%)
HSV	hsv(202, 68%, 71%)
CMYK	cmyk(68.3%, 25%, 0%, 29.4%)
CIE-LAB	lab(53.48, -9.28, -30.64)
CIE-LCH	lch(53.48, 32.02, 253.15°)
OKLab	oklab(59.47% -0.0551 -0.0862)
OKLCH	oklch(59.47% 0.102 237.4)
XYZ	xyz(18.5863, 21.4911, 46.3398)
Luminance	0.2149 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B4 #B46639

analogous

#39B4A4 #3987B4 #394AB4

triadic

#3987B4 #B43987 #87B439

tetradic

#3987B4 #A439B4 #B46639 #4AB439

square

#3987B4 #A439B4 #B46639 #4AB439

split-complementary

#3987B4 #B4394A #B4A439

monochromatic

#1C4157 #2A6486 #3987B4 #5EA4CC #8DBEDB

Accessibility & contrast

On white

3.96

#3987B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#3987B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B4

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B4	#FFFFFF	#000000	##000000
##3987B4	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7287B6

Deuteranopia (green-blind)

#617AB3

Tritanopia (blue-blind)

#009396

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b4;
/* rgb */ color: rgb(57, 135, 180);
/* oklch */ color: oklch(59.5% 0.102 237.4);

Tailwind

colors: {
  custom: {
    50: '#7da9ca',
    500: '#3987b4',
    950: '#000000',
  },
}

SCSS

$custom: #3987b4;
$custom-light: #7da9ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b4",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 180
  },
  "hsl": {
    "h": 201.951,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.59473,
    "c": 0.10232,
    "h": 237.4
  },
  "luminance": 0.21493
}

Semantic roles & 50–950 ramp

primary

#3987B4

secondary

#C59C83

accent

#814CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3987B4

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

Preview Lab → · Contrast checker → · Palette generator →