#3F87B2#3F87B2

#3F87B2 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.097 H 237.7°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F87B2
RGB	rgb(63, 135, 178)
HSL	hsl(202, 48%, 47%)
HSV	hsv(202, 65%, 70%)
CMYK	cmyk(64.6%, 24.2%, 0%, 30.2%)
CIE-LAB	lab(53.60, -8.94, -29.30)
CIE-LCH	lch(53.60, 30.63, 253.04°)
OKLab	oklab(59.59% -0.052 -0.0823)
OKLCH	oklch(59.59% 0.097 237.7)
XYZ	xyz(18.7467, 21.5972, 45.2916)
Luminance	0.2160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F87B2 #B26A3F

analogous

#3FB2A4 #3F87B2 #3F4DB2

triadic

#3F87B2 #B23F87 #87B23F

tetradic

#3F87B2 #A43FB2 #B26A3F #4DB23F

square

#3F87B2 #A43FB2 #B26A3F #4DB23F

split-complementary

#3F87B2 #B23F4D #B2A43F

monochromatic

#1F4258 #2F6585 #3F87B2 #66A4C9 #93BFD9

Accessibility & contrast

On white

3.95

#3F87B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3F87B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87B2

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F87B2	#FFFFFF	#000000	##000000
##3F87B2	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)

#7387B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#009296

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f87b2;
/* rgb */ color: rgb(63, 135, 178);
/* oklch */ color: oklch(59.6% 0.097 237.7);

Tailwind

colors: {
  custom: {
    50: '#80a9c9',
    500: '#3f87b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f87b2;
$custom-light: #80a9c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f87b2",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 178
  },
  "hsl": {
    "h": 202.435,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.59592,
    "c": 0.0973,
    "h": 237.7
  },
  "luminance": 0.21599
}

Semantic roles & 50–950 ramp

primary

#3F87B2

secondary

#C49F89

accent

#8350D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F87B2

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

Preview Lab → · Contrast checker → · Palette generator →