#3F91BE#3F91BE

#3F91BE is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.5% C 0.104 H 235.9°. Best body text is #000000 at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F91BE
RGB	rgb(63, 145, 190)
HSL	hsl(201, 50%, 50%)
HSV	hsv(201, 67%, 75%)
CMYK	cmyk(66.8%, 23.7%, 0%, 25.5%)
CIE-LAB	lab(57.10, -10.59, -30.70)
CIE-LCH	lch(57.10, 32.48, 250.98°)
OKLab	oklab(62.54% -0.0584 -0.0862)
OKLCH	oklch(62.54% 0.104 235.9)
XYZ	xyz(21.4659, 25.0230, 52.4038)
Luminance	0.2502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91BE #BE6C3F

analogous

#3FBEAC #3F91BE #3F51BE

triadic

#3F91BE #BE3F91 #91BE3F

tetradic

#3F91BE #AC3FBE #BE6C3F #51BE3F

square

#3F91BE #AC3FBE #BE6C3F #51BE3F

split-complementary

#3F91BE #BE3F51 #BEAC3F

monochromatic

#214B62 #306E90 #3F91BE #6CABCE #9AC6DD

Accessibility & contrast

On white

3.50

#3F91BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.00

#3F91BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91BE

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91BE	#FFFFFF	#000000	##000000
##3F91BE	1.00	3.50	6.00	6.00
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.00	21.00	1.00	1.00
##000000	6.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C90C0

Deuteranopia (green-blind)

#6A83BD

Tritanopia (blue-blind)

#009DA0

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f91be;
/* rgb */ color: rgb(63, 145, 190);
/* oklch */ color: oklch(62.5% 0.104 235.9);

Tailwind

colors: {
  custom: {
    50: '#82b1d1',
    500: '#3f91be',
    950: '#000000',
  },
}

SCSS

$custom: #3f91be;
$custom-light: #82b1d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91be",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 190
  },
  "hsl": {
    "h": 201.26,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.62541,
    "c": 0.10413,
    "h": 235.9
  },
  "luminance": 0.25025
}

Semantic roles & 50–950 ramp

primary

#3F91BE

secondary

#C9A48F

accent

#804EDA

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #3F91BE

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

Preview Lab → · Contrast checker → · Palette generator →