#3F6CB4#3F6CB4

#3F6CB4 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.5% C 0.124 H 259.4°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CB4
RGB	rgb(63, 108, 180)
HSL	hsl(217, 48%, 48%)
HSV	hsv(217, 65%, 71%)
CMYK	cmyk(65%, 40%, 0%, 29.4%)
CIE-LAB	lab(45.74, 7.92, -42.81)
CIE-LCH	lch(45.74, 43.54, 280.49°)
OKLab	oklab(53.45% -0.0228 -0.1218)
OKLCH	oklch(53.45% 0.124 259.4)
XYZ	xyz(15.6477, 15.0757, 45.2564)
Luminance	0.1508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CB4 #B4873F

analogous

#3FA6B4 #3F6CB4 #4C3FB4

triadic

#3F6CB4 #B43F6C #6CB43F

tetradic

#3F6CB4 #B43FA6 #B4873F #3FB44C

square

#3F6CB4 #B43FA6 #B4873F #3FB44C

split-complementary

#3F6CB4 #B44C3F #A6B43F

monochromatic

#1F3659 #2F5187 #3F6CB4 #678DCA #94AFDA

Accessibility & contrast

On white

5.23

#3F6CB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#3F6CB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CB4

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CB4	#FFFFFF	#000000	##FFFFFF
##3F6CB4	1.00	5.23	4.02	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C72B7

Deuteranopia (green-blind)

#3B67B3

Tritanopia (blue-blind)

#007C87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f6cb4;
/* rgb */ color: rgb(63, 108, 180);
/* oklch */ color: oklch(53.5% 0.124 259.4);

Tailwind

colors: {
  custom: {
    50: '#8095cb',
    500: '#3f6cb4',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cb4;
$custom-light: #8095cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cb4",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 180
  },
  "hsl": {
    "h": 216.923,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53453,
    "c": 0.12396,
    "h": 259.4
  },
  "luminance": 0.15077
}

Semantic roles & 50–950 ramp

primary

#3F6CB4

secondary

#C5AE8A

accent

#A450D8

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6CB4

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

Preview Lab → · Contrast checker → · Palette generator →