#3F7CB7#3F7CB7

#3F7CB7 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.111 H 249.7°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB7
RGB	rgb(63, 124, 183)
HSL	hsl(210, 49%, 48%)
HSV	hsv(210, 66%, 72%)
CMYK	cmyk(65.6%, 32.2%, 0%, 28.2%)
CIE-LAB	lab(50.56, -0.81, -36.93)
CIE-LCH	lch(50.56, 36.94, 268.74°)
OKLab	oklab(57.27% -0.0387 -0.1045)
OKLCH	oklch(57.27% 0.111 249.7)
XYZ	xyz(17.8016, 18.8892, 47.4984)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB7 #B77A3F

analogous

#3FB7B6 #3F7CB7 #3F40B7

triadic

#3F7CB7 #B73F7C #7CB73F

tetradic

#3F7CB7 #B63FB7 #B77A3F #40B73F

square

#3F7CB7 #B63FB7 #B77A3F #40B73F

split-complementary

#3F7CB7 #B73F40 #B7B63F

monochromatic

#203E5C #2F5D89 #3F7CB7 #689ACB #96B9DB

Accessibility & contrast

On white

4.39

#3F7CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3F7CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB7

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB7	#FFFFFF	#000000	##000000
##3F7CB7	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBA

Deuteranopia (green-blind)

#5273B6

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7cb7;
/* rgb */ color: rgb(63, 124, 183);
/* oklch */ color: oklch(57.3% 0.111 249.7);

Tailwind

colors: {
  custom: {
    50: '#80a1cd',
    500: '#3f7cb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb7;
$custom-light: #80a1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb7",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 183
  },
  "hsl": {
    "h": 209.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57267,
    "c": 0.11139,
    "h": 249.7
  },
  "luminance": 0.18891
}

Semantic roles & 50–950 ramp

primary

#3F7CB7

secondary

#C6A88B

accent

#934FD8

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F7CB7

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

Preview Lab → · Contrast checker → · Palette generator →