#3F7CB1#3F7CB1

#3F7CB1 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.104 H 247.1°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB1
RGB	rgb(63, 124, 177)
HSL	hsl(208, 48%, 47%)
HSV	hsv(208, 64%, 69%)
CMYK	cmyk(64.4%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(50.27, -2.88, -33.92)
CIE-LCH	lch(50.27, 34.04, 265.15°)
OKLab	oklab(56.95% -0.0405 -0.0957)
OKLCH	oklch(56.95% 0.104 247.1)
XYZ	xyz(17.1904, 18.6447, 44.2793)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB1 #B1743F

analogous

#3FB1AD #3F7CB1 #3F43B1

triadic

#3F7CB1 #B13F7C #7CB13F

tetradic

#3F7CB1 #AD3FB1 #B1743F #43B13F

square

#3F7CB1 #AD3FB1 #B1743F #43B13F

split-complementary

#3F7CB1 #B13F43 #B1AD3F

monochromatic

#1F3D57 #2F5C84 #3F7CB1 #659AC8 #92B8D8

Accessibility & contrast

On white

4.44

#3F7CB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3F7CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB1

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB1	#FFFFFF	#000000	##000000
##3F7CB1	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB3

Deuteranopia (green-blind)

#5573B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7cb1;
/* rgb */ color: rgb(63, 124, 177);
/* oklch */ color: oklch(56.9% 0.104 247.1);

Tailwind

colors: {
  custom: {
    50: '#7fa1c8',
    500: '#3f7cb1',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb1;
$custom-light: #7fa1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb1",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 207.895,
    "s": 47.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56945,
    "c": 0.10392,
    "h": 247.1
  },
  "luminance": 0.18646
}

Semantic roles & 50–950 ramp

primary

#3F7CB1

secondary

#C4A488

accent

#8F51D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7CB1

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

Preview Lab → · Contrast checker → · Palette generator →