#3F7FB7#3F7FB7

#3F7FB7 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 58.0% C 0.109 H 247.4°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FB7
RGB	rgb(63, 127, 183)
HSL	hsl(208, 49%, 48%)
HSV	hsv(208, 66%, 72%)
CMYK	cmyk(65.6%, 30.6%, 0%, 28.2%)
CIE-LAB	lab(51.44, -2.60, -35.54)
CIE-LCH	lch(51.44, 35.63, 265.82°)
OKLab	oklab(57.96% -0.0418 -0.1004)
OKLCH	oklch(57.96% 0.109 247.4)
XYZ	xyz(18.1833, 19.6526, 47.6256)
Luminance	0.1965 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FB7 #B7773F

analogous

#3FB7B3 #3F7FB7 #3F43B7

triadic

#3F7FB7 #B73F7F #7FB73F

tetradic

#3F7FB7 #B33FB7 #B7773F #43B73F

square

#3F7FB7 #B33FB7 #B7773F #43B73F

split-complementary

#3F7FB7 #B73F43 #B7B33F

monochromatic

#20405C #2F5F89 #3F7FB7 #689DCB #96BBDB

Accessibility & contrast

On white

4.26

#3F7FB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3F7FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FB7

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FB7	#FFFFFF	#000000	##000000
##3F7FB7	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681B9

Deuteranopia (green-blind)

#5675B6

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7fb7;
/* rgb */ color: rgb(63, 127, 183);
/* oklch */ color: oklch(58.0% 0.109 247.4);

Tailwind

colors: {
  custom: {
    50: '#80a3cd',
    500: '#3f7fb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fb7;
$custom-light: #80a3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fb7",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 183
  },
  "hsl": {
    "h": 208,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57963,
    "c": 0.10875,
    "h": 247.4
  },
  "luminance": 0.19654
}

Semantic roles & 50–950 ramp

primary

#3F7FB7

secondary

#C6A78B

accent

#8F4FD8

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7FB7

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

Preview Lab → · Contrast checker → · Palette generator →