#3F7ACB#3F7ACB

#3F7ACB is a mid, vivid cyan. Relative luminance 0.193; OKLCH L 58.0% C 0.139 H 256.9°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F7ACB
RGB	rgb(63, 122, 203)
HSL	hsl(215, 57%, 52%)
HSV	hsv(215, 69%, 80%)
CMYK	cmyk(69%, 39.9%, 0%, 20.4%)
CIE-LAB	lab(51.02, 7.45, -47.66)
CIE-LCH	lch(51.02, 48.23, 278.88°)
OKLab	oklab(57.97% -0.0316 -0.1358)
OKLCH	oklch(57.97% 0.139 256.9)
XYZ	xyz(19.7850, 19.2856, 59.1681)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7ACB #CB903F

analogous

#3FC0CB #3F7ACB #4A3FCB

triadic

#3F7ACB #CB3F7A #7ACB3F

tetradic

#3F7ACB #CB3FC0 #CB903F #3FCB4A

square

#3F7ACB #CB3FC0 #CB903F #3FCB4A

split-complementary

#3F7ACB #CB4A3F #C0CB3F

monochromatic

#1F4171 #2C5DA1 #3F7ACB #6F9BD8 #9FBDE5

Accessibility & contrast

On white

4.32

#3F7ACB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#3F7ACB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7ACB

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7ACB	#FFFFFF	#000000	##000000
##3F7ACB	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5581CE

Deuteranopia (green-blind)

#3F74C9

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7acb;
/* rgb */ color: rgb(63, 122, 203);
/* oklch */ color: oklch(58.0% 0.139 256.9);

Tailwind

colors: {
  custom: {
    50: '#84a0db',
    500: '#3f7acb',
    950: '#000000',
  },
}

SCSS

$custom: #3f7acb;
$custom-light: #84a0db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7acb",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 203
  },
  "hsl": {
    "h": 214.714,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57968,
    "c": 0.13947,
    "h": 256.9
  },
  "luminance": 0.19288
}

Semantic roles & 50–950 ramp

primary

#3F7ACB

secondary

#D1B894

accent

#A047E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7ACB

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

Preview Lab → · Contrast checker → · Palette generator →