#3F7FBC#3F7FBC

#3F7FBC is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.2% C 0.115 H 249.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FBC
RGB	rgb(63, 127, 188)
HSL	hsl(209, 50%, 49%)
HSV	hsv(209, 66%, 74%)
CMYK	cmyk(66.5%, 32.4%, 0%, 26.3%)
CIE-LAB	lab(51.68, -0.87, -38.03)
CIE-LCH	lch(51.68, 38.04, 268.70°)
OKLab	oklab(58.23% -0.0404 -0.1076)
OKLCH	oklch(58.23% 0.115 249.4)
XYZ	xyz(18.7130, 19.8644, 50.4152)
Luminance	0.1987 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FBC #BC7C3F

analogous

#3FBCBB #3F7FBC #3F41BC

triadic

#3F7FBC #BC3F7F #7FBC3F

tetradic

#3F7FBC #BB3FBC #BC7C3F #41BC3F

square

#3F7FBC #BB3FBC #BC7C3F #41BC3F

split-complementary

#3F7FBC #BC3F41 #BCBB3F

monochromatic

#204160 #30608E #3F7FBC #6B9DCD #99BCDD

Accessibility & contrast

On white

4.22

#3F7FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3F7FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FBC

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FBC	#FFFFFF	#000000	##000000
##3F7FBC	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6482BF

Deuteranopia (green-blind)

#5376BB

Tritanopia (blue-blind)

#008D95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7fbc;
/* rgb */ color: rgb(63, 127, 188);
/* oklch */ color: oklch(58.2% 0.115 249.4);

Tailwind

colors: {
  custom: {
    50: '#81a3d0',
    500: '#3f7fbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fbc;
$custom-light: #81a3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fbc",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 188
  },
  "hsl": {
    "h": 209.28,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.58232,
    "c": 0.11496,
    "h": 249.4
  },
  "luminance": 0.19866
}

Semantic roles & 50–950 ramp

primary

#3F7FBC

secondary

#C9AB8E

accent

#924ED9

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F7FBC

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

Preview Lab → · Contrast checker → · Palette generator →