#3F7CCB#3F7CCB

#3F7CCB is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.4% C 0.137 H 255.9°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CCB
RGB	rgb(63, 124, 203)
HSL	hsl(214, 57%, 52%)
HSV	hsv(214, 69%, 80%)
CMYK	cmyk(69%, 38.9%, 0%, 20.4%)
CIE-LAB	lab(51.59, 6.22, -46.75)
CIE-LCH	lch(51.59, 47.16, 277.58°)
OKLab	oklab(58.41% -0.0335 -0.1332)
OKLCH	oklch(58.41% 0.137 255.9)
XYZ	xyz(20.0331, 19.7818, 59.2508)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CCB #CB8E3F

analogous

#3FC2CB #3F7CCB #483FCB

triadic

#3F7CCB #CB3F7C #7CCB3F

tetradic

#3F7CCB #CB3FC2 #CB8E3F #3FCB48

square

#3F7CCB #CB3FC2 #CB8E3F #3FCB48

split-complementary

#3F7CCB #CB483F #C2CB3F

monochromatic

#1F4371 #2C5FA1 #3F7CCB #6F9DD8 #9FBEE5

Accessibility & contrast

On white

4.24

#3F7CCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3F7CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CCB

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CCB	#FFFFFF	#000000	##000000
##3F7CCB	1.00	4.24	4.96	4.96
#FFFFFF	4.24	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)

#5882CE

Deuteranopia (green-blind)

#4375C9

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7ccb;
/* rgb */ color: rgb(63, 124, 203);
/* oklch */ color: oklch(58.4% 0.137 255.9);

Tailwind

colors: {
  custom: {
    50: '#83a1db',
    500: '#3f7ccb',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ccb;
$custom-light: #83a1db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ccb",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 203
  },
  "hsl": {
    "h": 213.857,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.58411,
    "c": 0.1373,
    "h": 255.9
  },
  "luminance": 0.19784
}

Semantic roles & 50–950 ramp

primary

#3F7CCB

secondary

#D1B794

accent

#9E47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7CCB

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

Preview Lab → · Contrast checker → · Palette generator →