#3987B6#3987B6

#3987B6 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.104 H 238.6°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3987B6
RGB	rgb(57, 135, 182)
HSL	hsl(203, 52%, 47%)
HSV	hsv(203, 69%, 71%)
CMYK	cmyk(68.7%, 25.8%, 0%, 28.6%)
CIE-LAB	lab(53.57, -8.60, -31.65)
CIE-LCH	lch(53.57, 32.80, 254.81°)
OKLab	oklab(59.57% -0.0544 -0.0891)
OKLCH	oklch(59.57% 0.104 238.6)
XYZ	xyz(18.7915, 21.5732, 47.4206)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3987B6 #B66839

analogous

#39B6A7 #3987B6 #3949B6

triadic

#3987B6 #B63987 #87B639

tetradic

#3987B6 #A739B6 #B66839 #49B639

square

#3987B6 #A739B6 #B66839 #49B639

split-complementary

#3987B6 #B63949 #B6A739

monochromatic

#1C4259 #2A6487 #3987B6 #5FA4CD #8EBEDC

Accessibility & contrast

On white

3.95

#3987B6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3987B6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3987B6

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3987B6	#FFFFFF	#000000	##000000
##3987B6	1.00	3.95	5.32	5.32
#FFFFFF	3.95	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)

#7187B8

Deuteranopia (green-blind)

#607BB5

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3987b6;
/* rgb */ color: rgb(57, 135, 182);
/* oklch */ color: oklch(59.6% 0.104 238.6);

Tailwind

colors: {
  custom: {
    50: '#7ea9cc',
    500: '#3987b6',
    950: '#000000',
  },
}

SCSS

$custom: #3987b6;
$custom-light: #7ea9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3987b6",
  "rgb": {
    "r": 57,
    "g": 135,
    "b": 182
  },
  "hsl": {
    "h": 202.56,
    "s": 52.301,
    "l": 46.863
  },
  "oklch": {
    "l": 0.59573,
    "c": 0.10442,
    "h": 238.6
  },
  "luminance": 0.21575
}

Semantic roles & 50–950 ramp

primary

#3987B6

secondary

#C69D85

accent

#824CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3987B6

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

Preview Lab → · Contrast checker → · Palette generator →