#3F7FBB#3F7FBB

#3F7FBB is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.2% C 0.114 H 249.1°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FBB
RGB	rgb(63, 127, 187)
HSL	hsl(209, 50%, 49%)
HSV	hsv(209, 66%, 73%)
CMYK	cmyk(66.3%, 32.1%, 0%, 26.7%)
CIE-LAB	lab(51.63, -1.21, -37.53)
CIE-LCH	lch(51.63, 37.55, 268.15°)
OKLab	oklab(58.18% -0.0406 -0.1062)
OKLCH	oklch(58.18% 0.114 249.1)
XYZ	xyz(18.6056, 19.8215, 49.8495)
Luminance	0.1982 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FBB #BB7B3F

analogous

#3FBBB9 #3F7FBB #3F41BB

triadic

#3F7FBB #BB3F7F #7FBB3F

tetradic

#3F7FBB #B93FBB #BB7B3F #41BB3F

square

#3F7FBB #B93FBB #BB7B3F #41BB3F

split-complementary

#3F7FBB #BB3F41 #BBB93F

monochromatic

#20415F #30608D #3F7FBB #6A9DCD #98BBDC

Accessibility & contrast

On white

4.23

#3F7FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3F7FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FBB

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FBB	#FFFFFF	#000000	##000000
##3F7FBB	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BE

Deuteranopia (green-blind)

#5476BA

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7fbb;
/* rgb */ color: rgb(63, 127, 187);
/* oklch */ color: oklch(58.2% 0.114 249.1);

Tailwind

colors: {
  custom: {
    50: '#81a3cf',
    500: '#3f7fbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fbb;
$custom-light: #81a3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fbb",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 187
  },
  "hsl": {
    "h": 209.032,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.58178,
    "c": 0.1137,
    "h": 249.1
  },
  "luminance": 0.19823
}

Semantic roles & 50–950 ramp

primary

#3F7FBB

secondary

#C8AA8E

accent

#924FD9

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F7FBB

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

Preview Lab → · Contrast checker → · Palette generator →