#3991BD#3991BD

#3991BD is a light, moderate cyan. Relative luminance 0.248; OKLCH L 62.3% C 0.106 H 234.0°. Best body text is #000000 at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#3991BD
RGB	rgb(57, 145, 189)
HSL	hsl(200, 54%, 48%)
HSV	hsv(200, 70%, 74%)
CMYK	cmyk(69.8%, 23.3%, 0%, 25.9%)
CIE-LAB	lab(56.87, -11.86, -30.50)
CIE-LCH	lch(56.87, 32.73, 248.75°)
OKLab	oklab(62.3% -0.0622 -0.0857)
OKLCH	oklch(62.3% 0.106 234)
XYZ	xyz(20.9944, 24.7925, 51.8132)
Luminance	0.2480 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3991BD #BD6539

analogous

#39BDA7 #3991BD #394FBD

triadic

#3991BD #BD3991 #91BD39

tetradic

#3991BD #A739BD #BD6539 #4FBD39

square

#3991BD #A739BD #BD6539 #4FBD39

split-complementary

#3991BD #BD394F #BDA739

monochromatic

#1D495F #2B6D8E #3991BD #63ACD0 #92C5DE

Accessibility & contrast

On white

3.52

#3991BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.96

#3991BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3991BD

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3991BD	#FFFFFF	#000000	##000000
##3991BD	1.00	3.52	5.96	5.96
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.96	21.00	1.00	1.00
##000000	5.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C90BF

Deuteranopia (green-blind)

#6A83BC

Tritanopia (blue-blind)

#009DA0

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3991bd;
/* rgb */ color: rgb(57, 145, 189);
/* oklch */ color: oklch(62.3% 0.106 234.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3991bd",
  "rgb": {
    "r": 57,
    "g": 145,
    "b": 189
  },
  "hsl": {
    "h": 200,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.62297,
    "c": 0.10593,
    "h": 234
  },
  "luminance": 0.24795
}

Semantic roles & 50–950 ramp

primary

#3991BD

secondary

#C99E89

accent

#7C4BDD

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3991BD

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

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