#3987B3#3987B3

#3987B3 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.4% C 0.101 H 236.8°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3987B3
RGB	rgb(57, 135, 179)
HSL	hsl(202, 52%, 46%)
HSV	hsv(202, 68%, 70%)
CMYK	cmyk(68.2%, 24.6%, 0%, 29.8%)
CIE-LAB	lab(53.44, -9.62, -30.14)
CIE-LCH	lch(53.44, 31.63, 252.30°)
OKLab	oklab(59.42% -0.0555 -0.0847)
OKLCH	oklch(59.42% 0.101 236.8)
XYZ	xyz(18.4848, 21.4505, 45.8053)
Luminance	0.2145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B3 #B36539

analogous

#39B3A2 #3987B3 #394AB3

triadic

#3987B3 #B33987 #87B339

tetradic

#3987B3 #A239B3 #B36539 #4AB339

square

#3987B3 #A239B3 #B36539 #4AB339

split-complementary

#3987B3 #B3394A #B3A239

monochromatic

#1B4156 #2A6485 #3987B3 #5EA4CC #8CBEDA

Accessibility & contrast

On white

3.97

#3987B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#3987B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B3

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B3	#FFFFFF	#000000	##000000
##3987B3	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7286B5

Deuteranopia (green-blind)

#617AB2

Tritanopia (blue-blind)

#009296

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b3;
/* rgb */ color: rgb(57, 135, 179);
/* oklch */ color: oklch(59.4% 0.101 236.8);

Tailwind

colors: {
  custom: {
    50: '#7da9ca',
    500: '#3987b3',
    950: '#000000',
  },
}

SCSS

$custom: #3987b3;
$custom-light: #7da9ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b3",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 179
  },
  "hsl": {
    "h": 201.639,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.59424,
    "c": 0.10128,
    "h": 236.8
  },
  "luminance": 0.21452
}

Semantic roles & 50–950 ramp

primary

#3987B3

secondary

#C59B83

accent

#804DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3987B3

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

Preview Lab → · Contrast checker → · Palette generator →