#3F91BA#3F91BA

#3F91BA is a light, moderate cyan. Relative luminance 0.249; OKLCH L 62.4% C 0.100 H 233.4°. Best body text is #000000 at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F91BA
RGB	rgb(63, 145, 186)
HSL	hsl(200, 49%, 49%)
HSV	hsv(200, 66%, 73%)
CMYK	cmyk(66.1%, 22%, 0%, 27.1%)
CIE-LAB	lab(56.93, -11.91, -28.70)
CIE-LCH	lch(56.93, 31.07, 247.45°)
OKLab	oklab(62.35% -0.0598 -0.0805)
OKLCH	oklch(62.35% 0.1 233.4)
XYZ	xyz(21.0348, 24.8505, 50.1329)
Luminance	0.2485 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91BA #BA683F

analogous

#3FBAA6 #3F91BA #3F54BA

triadic

#3F91BA #BA3F91 #91BA3F

tetradic

#3F91BA #A63FBA #BA683F #54BA3F

square

#3F91BA #A63FBA #BA683F #54BA3F

split-complementary

#3F91BA #BA3F54 #BAA63F

monochromatic

#204A5F #306D8C #3F91BA #6AACCC #97C5DC

Accessibility & contrast

On white

3.52

#3F91BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.97

#3F91BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91BA

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91BA	#FFFFFF	#000000	##000000
##3F91BA	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)

#7D90BC

Deuteranopia (green-blind)

#6C83B9

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f91ba;
/* rgb */ color: rgb(63, 145, 186);
/* oklch */ color: oklch(62.4% 0.100 233.4);

Tailwind

colors: {
  custom: {
    50: '#81b1cf',
    500: '#3f91ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f91ba;
$custom-light: #81b1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91ba",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 186
  },
  "hsl": {
    "h": 200,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.62352,
    "c": 0.10023,
    "h": 233.4
  },
  "luminance": 0.24853
}

Semantic roles & 50–950 ramp

primary

#3F91BA

secondary

#C8A18D

accent

#7D4FD9

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F91BA

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

Preview Lab → · Contrast checker → · Palette generator →