#3187BB#3187BB

#3187BB is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.113 H 239.5°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3187BB
RGB	rgb(49, 135, 187)
HSL	hsl(203, 58%, 46%)
HSV	hsv(203, 74%, 73%)
CMYK	cmyk(73.8%, 27.8%, 0%, 26.7%)
CIE-LAB	lab(53.56, -8.02, -34.54)
CIE-LCH	lch(53.56, 35.46, 256.92°)
OKLab	oklab(59.58% -0.0574 -0.0975)
OKLCH	oklch(59.58% 0.113 239.5)
XYZ	xyz(18.8967, 21.5666, 50.1709)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3187BB #BB6531

analogous

#31BBAA #3187BB #3142BB

triadic

#3187BB #BB3187 #87BB31

tetradic

#3187BB #AA31BB #BB6531 #42BB31

square

#3187BB #AA31BB #BB6531 #42BB31

split-complementary

#3187BB #BB3142 #BBAA31

monochromatic

#18415A #24648B #3187BB #56A4D3 #87BEE0

Accessibility & contrast

On white

3.95

#3187BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3187BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3187BB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3187BB	#FFFFFF	#000000	##000000
##3187BB	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F87BD

Deuteranopia (green-blind)

#5C7ABA

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3187bb;
/* rgb */ color: rgb(49, 135, 187);
/* oklch */ color: oklch(59.6% 0.113 239.5);

Tailwind

colors: {
  custom: {
    50: '#7ca9cf',
    500: '#3187bb',
    950: '#000000',
  },
}

SCSS

$custom: #3187bb;
$custom-light: #7ca9cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3187bb",
  "rgb": {
    "r": 49,
    "g": 135,
    "b": 187
  },
  "hsl": {
    "h": 202.609,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.59575,
    "c": 0.11316,
    "h": 239.5
  },
  "luminance": 0.21569
}

Semantic roles & 50–950 ramp

primary

#3187BB

secondary

#C99B7F

accent

#8146E2

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3187BB

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

Preview Lab → · Contrast checker → · Palette generator →