#3F6BB0#3F6BB0

#3F6BB0 is a mid, moderate blue. Relative luminance 0.147; OKLCH L 53.0% C 0.120 H 259.1°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BB0
RGB	rgb(63, 107, 176)
HSL	hsl(217, 47%, 47%)
HSV	hsv(217, 64%, 69%)
CMYK	cmyk(64.2%, 39.2%, 0%, 31%)
CIE-LAB	lab(45.23, 7.13, -41.29)
CIE-LCH	lch(45.23, 41.90, 279.80°)
OKLab	oklab(52.99% -0.0227 -0.1174)
OKLCH	oklch(52.99% 0.12 259.1)
XYZ	xyz(15.1413, 14.7053, 43.1063)
Luminance	0.1471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BB0 #B0843F

analogous

#3FA4B0 #3F6BB0 #4C3FB0

triadic

#3F6BB0 #B03F6B #6BB03F

tetradic

#3F6BB0 #B03FA4 #B0843F #3FB04C

square

#3F6BB0 #B03FA4 #B0843F #3FB04C

split-complementary

#3F6BB0 #B04C3F #A4B03F

monochromatic

#1F3456 #2F5083 #3F6BB0 #658BC8 #92ADD8

Accessibility & contrast

On white

5.33

#3F6BB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3F6BB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BB0

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BB0	#FFFFFF	#000000	##FFFFFF
##3F6BB0	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D71B3

Deuteranopia (green-blind)

#3C66AF

Tritanopia (blue-blind)

#007B85

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f6bb0;
/* rgb */ color: rgb(63, 107, 176);
/* oklch */ color: oklch(53.0% 0.120 259.1);

Tailwind

colors: {
  custom: {
    50: '#7f94c8',
    500: '#3f6bb0',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bb0;
$custom-light: #7f94c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bb0",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 176
  },
  "hsl": {
    "h": 216.637,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52986,
    "c": 0.11957,
    "h": 259.1
  },
  "luminance": 0.14707
}

Semantic roles & 50–950 ramp

primary

#3F6BB0

secondary

#C3AC88

accent

#A351D7

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6BB0

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

Preview Lab → · Contrast checker → · Palette generator →