#3F7DB8#3F7DB8

#3F7DB8 is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.6% C 0.112 H 249.3°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DB8
RGB	rgb(63, 125, 184)
HSL	hsl(209, 49%, 48%)
HSV	hsv(209, 66%, 72%)
CMYK	cmyk(65.8%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(50.90, -1.06, -36.96)
CIE-LCH	lch(50.90, 36.98, 268.35°)
OKLab	oklab(57.55% -0.0394 -0.1045)
OKLCH	oklch(57.55% 0.112 249.3)
XYZ	xyz(18.0320, 19.1829, 48.0905)
Luminance	0.1918 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DB8 #B87A3F

analogous

#3FB8B6 #3F7DB8 #3F40B8

triadic

#3F7DB8 #B83F7D #7DB83F

tetradic

#3F7DB8 #B63FB8 #B87A3F #40B83F

square

#3F7DB8 #B63FB8 #B87A3F #40B83F

split-complementary

#3F7DB8 #B83F40 #B8B63F

monochromatic

#203F5D #2F5E8A #3F7DB8 #699BCC #96BADB

Accessibility & contrast

On white

4.34

#3F7DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#3F7DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DB8

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DB8	#FFFFFF	#000000	##000000
##3F7DB8	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6380BB

Deuteranopia (green-blind)

#5374B7

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7db8;
/* rgb */ color: rgb(63, 125, 184);
/* oklch */ color: oklch(57.6% 0.112 249.3);

Tailwind

colors: {
  custom: {
    50: '#80a2cd',
    500: '#3f7db8',
    950: '#000000',
  },
}

SCSS

$custom: #3f7db8;
$custom-light: #80a2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7db8",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 209.256,
    "s": 48.988,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57553,
    "c": 0.11174,
    "h": 249.3
  },
  "luminance": 0.19185
}

Semantic roles & 50–950 ramp

primary

#3F7DB8

secondary

#C7A98C

accent

#924FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7DB8

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

Preview Lab → · Contrast checker → · Palette generator →