#3F7CC9#3F7CC9

#3F7CC9 is a mid, vivid cyan. Relative luminance 0.197; OKLCH L 58.3% C 0.135 H 255.4°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CC9
RGB	rgb(63, 124, 201)
HSL	hsl(213, 56%, 52%)
HSV	hsv(213, 69%, 79%)
CMYK	cmyk(68.7%, 38.3%, 0%, 21.2%)
CIE-LAB	lab(51.48, 5.51, -45.78)
CIE-LCH	lch(51.48, 46.11, 276.87°)
OKLab	oklab(58.29% -0.0339 -0.1303)
OKLCH	oklch(58.29% 0.135 255.4)
XYZ	xyz(19.7963, 19.6870, 58.0037)
Luminance	0.1969 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CC9 #C98C3F

analogous

#3FC1C9 #3F7CC9 #473FC9

triadic

#3F7CC9 #C93F7C #7CC93F

tetradic

#3F7CC9 #C93FC1 #C98C3F #3FC947

square

#3F7CC9 #C93FC1 #C98C3F #3FC947

split-complementary

#3F7CC9 #C9473F #C1C93F

monochromatic

#1F426F #2D5F9E #3F7CC9 #6F9DD6 #9FBDE4

Accessibility & contrast

On white

4.25

#3F7CC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3F7CC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CC9

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CC9	#FFFFFF	#000000	##000000
##3F7CC9	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5982CC

Deuteranopia (green-blind)

#4475C7

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7cc9;
/* rgb */ color: rgb(63, 124, 201);
/* oklch */ color: oklch(58.3% 0.135 255.4);

Tailwind

colors: {
  custom: {
    50: '#83a1da',
    500: '#3f7cc9',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cc9;
$custom-light: #83a1da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cc9",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 201
  },
  "hsl": {
    "h": 213.478,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58292,
    "c": 0.13468,
    "h": 255.4
  },
  "luminance": 0.19689
}

Semantic roles & 50–950 ramp

primary

#3F7CC9

secondary

#D0B594

accent

#9D48DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7CC9

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

Preview Lab → · Contrast checker → · Palette generator →