#3987B9#3987B9

#3987B9 is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.7% C 0.108 H 240.2°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#3987B9
RGB	rgb(57, 135, 185)
HSL	hsl(203, 53%, 47%)
HSV	hsv(203, 69%, 73%)
CMYK	cmyk(69.2%, 27%, 0%, 27.5%)
CIE-LAB	lab(53.71, -7.56, -33.16)
CIE-LCH	lch(53.71, 34.01, 257.15°)
OKLab	oklab(59.72% -0.0534 -0.0935)
OKLCH	oklch(59.72% 0.108 240.2)
XYZ	xyz(19.1049, 21.6985, 49.0709)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B9 #B96B39

analogous

#39B9AB #3987B9 #3947B9

triadic

#3987B9 #B93987 #87B939

tetradic

#3987B9 #AB39B9 #B96B39 #47B939

square

#3987B9 #AB39B9 #B96B39 #47B939

split-complementary

#3987B9 #B93947 #B9AB39

monochromatic

#1C435B #2B658A #3987B9 #61A4CE #90BFDD

Accessibility & contrast

On white

3.93

#3987B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#3987B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B9

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B9	#FFFFFF	#000000	##000000
##3987B9	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7087BB

Deuteranopia (green-blind)

#5E7BB8

Tritanopia (blue-blind)

#009398

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b9;
/* rgb */ color: rgb(57, 135, 185);
/* oklch */ color: oklch(59.7% 0.108 240.2);

Tailwind

colors: {
  custom: {
    50: '#7ea9ce',
    500: '#3987b9',
    950: '#000000',
  },
}

SCSS

$custom: #3987b9;
$custom-light: #7ea9ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b9",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 185
  },
  "hsl": {
    "h": 203.438,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.59723,
    "c": 0.10766,
    "h": 240.2
  },
  "luminance": 0.21701
}

Semantic roles & 50–950 ramp

primary

#3987B9

secondary

#C8A086

accent

#844BDC

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3987B9

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

Preview Lab → · Contrast checker → · Palette generator →