#3991BE#3991BE

#3991BE is a light, moderate cyan. Relative luminance 0.248; OKLCH L 62.3% C 0.107 H 234.6°. Best body text is #000000 at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#3991BE
RGB	rgb(57, 145, 190)
HSL	hsl(200, 54%, 48%)
HSV	hsv(200, 70%, 75%)
CMYK	cmyk(70%, 23.7%, 0%, 25.5%)
CIE-LAB	lab(56.92, -11.52, -31.00)
CIE-LCH	lch(56.92, 33.07, 249.61°)
OKLab	oklab(62.34% -0.0619 -0.0871)
OKLCH	oklch(62.34% 0.107 234.6)
XYZ	xyz(21.1033, 24.8360, 52.3868)
Luminance	0.2484 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3991BE #BE6639

analogous

#39BEA8 #3991BE #394EBE

triadic

#3991BE #BE3991 #91BE39

tetradic

#3991BE #A839BE #BE6639 #4EBE39

square

#3991BE #A839BE #BE6639 #4EBE39

split-complementary

#3991BE #BE394E #BEA839

monochromatic

#1D4960 #2B6D8F #3991BE #64ACD0 #93C5DF

Accessibility & contrast

On white

3.52

#3991BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.97

#3991BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3991BE

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3991BE	#FFFFFF	#000000	##000000
##3991BE	1.00	3.52	5.97	5.97
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.97	21.00	1.00	1.00
##000000	5.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B90C0

Deuteranopia (green-blind)

#6983BD

Tritanopia (blue-blind)

#009DA0

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3991be;
/* rgb */ color: rgb(57, 145, 190);
/* oklch */ color: oklch(62.3% 0.107 234.6);

Tailwind

colors: {
  custom: {
    50: '#7fb1d1',
    500: '#3991be',
    950: '#000000',
  },
}

SCSS

$custom: #3991be;
$custom-light: #7fb1d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3991be",
  "rgb": {
    "r": 57,
    "g": 145,
    "b": 190
  },
  "hsl": {
    "h": 200.301,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.62345,
    "c": 0.1069,
    "h": 234.6
  },
  "luminance": 0.24838
}

Semantic roles & 50–950 ramp

primary

#3991BE

secondary

#CA9F89

accent

#7C4BDD

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3991BE

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

Preview Lab → · Contrast checker → · Palette generator →