#3F7DB7#3F7DB7

#3F7DB7 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.110 H 248.9°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DB7
RGB	rgb(63, 125, 183)
HSL	hsl(209, 49%, 48%)
HSV	hsv(209, 66%, 72%)
CMYK	cmyk(65.6%, 31.7%, 0%, 28.2%)
CIE-LAB	lab(50.85, -1.41, -36.47)
CIE-LCH	lch(50.85, 36.49, 267.79°)
OKLab	oklab(57.5% -0.0397 -0.1031)
OKLCH	oklch(57.5% 0.11 248.9)
XYZ	xyz(17.9276, 19.1411, 47.5404)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DB7 #B7793F

analogous

#3FB7B5 #3F7DB7 #3F41B7

triadic

#3F7DB7 #B73F7D #7DB73F

tetradic

#3F7DB7 #B53FB7 #B7793F #41B73F

square

#3F7DB7 #B53FB7 #B7793F #41B73F

split-complementary

#3F7DB7 #B73F41 #B7B53F

monochromatic

#203F5C #2F5E89 #3F7DB7 #689BCB #96B9DB

Accessibility & contrast

On white

4.35

#3F7DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3F7DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DB7

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DB7	#FFFFFF	#000000	##000000
##3F7DB7	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647FBA

Deuteranopia (green-blind)

#5374B6

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7db7;
/* rgb */ color: rgb(63, 125, 183);
/* oklch */ color: oklch(57.5% 0.110 248.9);

Tailwind

colors: {
  custom: {
    50: '#80a2cd',
    500: '#3f7db7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7db7;
$custom-light: #80a2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7db7",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 183
  },
  "hsl": {
    "h": 209,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57498,
    "c": 0.11049,
    "h": 248.9
  },
  "luminance": 0.19143
}

Semantic roles & 50–950 ramp

primary

#3F7DB7

secondary

#C6A88B

accent

#924FD8

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7DB7

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

Preview Lab → · Contrast checker → · Palette generator →