#3687AB#3687AB

#3687AB is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 58.9% C 0.095 H 230.7°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3687AB
RGB	rgb(54, 135, 171)
HSL	hsl(198, 52%, 44%)
HSV	hsv(198, 68%, 67%)
CMYK	cmyk(68.4%, 21.1%, 0%, 32.9%)
CIE-LAB	lab(53.00, -12.81, -26.22)
CIE-LCH	lch(53.00, 29.18, 243.97°)
OKLab	oklab(58.94% -0.0601 -0.0735)
OKLCH	oklch(58.94% 0.095 230.7)
XYZ	xyz(17.5331, 21.0506, 41.6593)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687AB #AB5A36

analogous

#36AB95 #3687AB #364CAB

triadic

#3687AB #AB3687 #87AB36

tetradic

#3687AB #9536AB #AB5A36 #4CAB36

square

#3687AB #9536AB #AB5A36 #4CAB36

split-complementary

#3687AB #AB364C #AB9536

monochromatic

#193E4E #27627C #3687AB #55A5C9 #83BED8

Accessibility & contrast

On white

4.03

#3687AB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#3687AB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687AB

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687AB	#FFFFFF	#000000	##000000
##3687AB	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7585AD

Deuteranopia (green-blind)

#6579AA

Tritanopia (blue-blind)

#009193

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3687ab;
/* rgb */ color: rgb(54, 135, 171);
/* oklch */ color: oklch(58.9% 0.095 230.7);

Tailwind

colors: {
  custom: {
    50: '#7baac4',
    500: '#3687ab',
    950: '#000000',
  },
}

SCSS

$custom: #3687ab;
$custom-light: #7baac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3687ab",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 171
  },
  "hsl": {
    "h": 198.462,
    "s": 52,
    "l": 44.118
  },
  "oklch": {
    "l": 0.5894,
    "c": 0.09497,
    "h": 230.7
  },
  "luminance": 0.21052
}

Semantic roles & 50–950 ramp

primary

#3687AB

secondary

#C2917B

accent

#784CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #3687AB

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

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