#3987B5#3987B5

#3987B5 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.5% C 0.103 H 238.0°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3987B5
RGB	rgb(57, 135, 181)
HSL	hsl(202, 52%, 47%)
HSV	hsv(202, 69%, 71%)
CMYK	cmyk(68.5%, 25.4%, 0%, 29%)
CIE-LAB	lab(53.53, -8.94, -31.15)
CIE-LCH	lch(53.53, 32.40, 253.99°)
OKLab	oklab(59.52% -0.0548 -0.0876)
OKLCH	oklch(59.52% 0.103 238)
XYZ	xyz(18.6886, 21.5320, 46.8783)
Luminance	0.2153 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B5 #B56739

analogous

#39B5A5 #3987B5 #3949B5

triadic

#3987B5 #B53987 #87B539

tetradic

#3987B5 #A539B5 #B56739 #49B539

square

#3987B5 #A539B5 #B56739 #49B539

split-complementary

#3987B5 #B53949 #B5A539

monochromatic

#1C4258 #2A6486 #3987B5 #5FA4CD #8DBEDB

Accessibility & contrast

On white

3.96

#3987B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3987B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B5

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B5	#FFFFFF	#000000	##000000
##3987B5	1.00	3.96	5.31	5.31
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B7

Deuteranopia (green-blind)

#607AB4

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b5;
/* rgb */ color: rgb(57, 135, 181);
/* oklch */ color: oklch(59.5% 0.103 238.0);

Tailwind

colors: {
  custom: {
    50: '#7ea9cb',
    500: '#3987b5',
    950: '#000000',
  },
}

SCSS

$custom: #3987b5;
$custom-light: #7ea9cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b5",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 181
  },
  "hsl": {
    "h": 202.258,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.59523,
    "c": 0.10337,
    "h": 238
  },
  "luminance": 0.21534
}

Semantic roles & 50–950 ramp

primary

#3987B5

secondary

#C69C84

accent

#814CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3987B5

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

Preview Lab → · Contrast checker → · Palette generator →