#3591BB#3591BB

#3591BB is a light, moderate cyan. Relative luminance 0.246; OKLCH L 62.1% C 0.106 H 232.0°. Best body text is #000000 at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#3591BB
RGB	rgb(53, 145, 187)
HSL	hsl(199, 56%, 47%)
HSV	hsv(199, 72%, 73%)
CMYK	cmyk(71.7%, 22.5%, 0%, 26.7%)
CIE-LAB	lab(56.68, -13.12, -29.68)
CIE-LCH	lch(56.68, 32.45, 246.15°)
OKLab	oklab(62.08% -0.0651 -0.0834)
OKLCH	oklch(62.08% 0.106 232)
XYZ	xyz(20.5597, 24.5932, 50.6675)
Luminance	0.2460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3591BB #BB5F35

analogous

#35BBA2 #3591BB #354EBB

triadic

#3591BB #BB3591 #91BB35

tetradic

#3591BB #A235BB #BB5F35 #4EBB35

square

#3591BB #A235BB #BB5F35 #4EBB35

split-complementary

#3591BB #BB354E #BBA235

monochromatic

#1A475C #276C8B #3591BB #5CACD1 #8CC5DE

Accessibility & contrast

On white

3.55

#3591BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.92

#3591BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3591BB

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3591BB	#FFFFFF	#000000	##000000
##3591BB	1.00	3.55	5.92	5.92
#FFFFFF	3.55	1.00	21.00	21.00
#000000	5.92	21.00	1.00	1.00
##000000	5.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8FBD

Deuteranopia (green-blind)

#6A82BA

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3591bb;
/* rgb */ color: rgb(53, 145, 187);
/* oklch */ color: oklch(62.1% 0.106 232.0);

Tailwind

colors: {
  custom: {
    50: '#7db1cf',
    500: '#3591bb',
    950: '#000000',
  },
}

SCSS

$custom: #3591bb;
$custom-light: #7db1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3591bb",
  "rgb": {
    "r": 53,
    "g": 145,
    "b": 187
  },
  "hsl": {
    "h": 198.806,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.62081,
    "c": 0.10581,
    "h": 232
  },
  "luminance": 0.24596
}

Semantic roles & 50–950 ramp

primary

#3591BB

secondary

#C99983

accent

#7849DF

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3591BB

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

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