#3987B7#3987B7

#3987B7 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.105 H 239.1°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3987B7
RGB	rgb(57, 135, 183)
HSL	hsl(203, 53%, 47%)
HSV	hsv(203, 69%, 72%)
CMYK	cmyk(68.9%, 26.2%, 0%, 28.2%)
CIE-LAB	lab(53.62, -8.25, -32.15)
CIE-LCH	lch(53.62, 33.19, 255.60°)
OKLab	oklab(59.62% -0.0541 -0.0906)
OKLCH	oklch(59.62% 0.106 239.1)
XYZ	xyz(18.8953, 21.6147, 47.9668)
Luminance	0.2162 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B7 #B76939

analogous

#39B7A8 #3987B7 #3948B7

triadic

#3987B7 #B73987 #87B739

tetradic

#3987B7 #A839B7 #B76939 #48B739

square

#3987B7 #A839B7 #B76939 #48B739

split-complementary

#3987B7 #B73948 #B7A839

monochromatic

#1C425A #2A6588 #3987B7 #60A4CD #8EBEDC

Accessibility & contrast

On white

3.94

#3987B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3987B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B7

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B7	#FFFFFF	#000000	##000000
##3987B7	1.00	3.94	5.32	5.32
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B9

Deuteranopia (green-blind)

#5F7BB6

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b7;
/* rgb */ color: rgb(57, 135, 183);
/* oklch */ color: oklch(59.6% 0.105 239.1);

Tailwind

colors: {
  custom: {
    50: '#7ea9cc',
    500: '#3987b7',
    950: '#000000',
  },
}

SCSS

$custom: #3987b7;
$custom-light: #7ea9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b7",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 183
  },
  "hsl": {
    "h": 202.857,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.59623,
    "c": 0.1055,
    "h": 239.1
  },
  "luminance": 0.21617
}

Semantic roles & 50–950 ramp

primary

#3987B7

secondary

#C79E85

accent

#834CDC

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3987B7

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

Preview Lab → · Contrast checker → · Palette generator →