#3F53AF#3F53AF

#3F53AF is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.8% C 0.148 H 270.6°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F53AF
RGB	rgb(63, 83, 175)
HSL	hsl(229, 47%, 47%)
HSV	hsv(229, 64%, 69%)
CMYK	cmyk(64%, 52.6%, 0%, 31.4%)
CIE-LAB	lab(38.44, 22.15, -51.57)
CIE-LCH	lch(38.44, 56.12, 293.24°)
OKLab	oklab(47.77% 0.0016 -0.1479)
OKLCH	oklch(47.77% 0.148 270.6)
XYZ	xyz(12.8784, 10.3373, 41.8658)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53AF #AF9B3F

analogous

#3F8BAF #3F53AF #633FAF

triadic

#3F53AF #AF3F53 #53AF3F

tetradic

#3F53AF #AF3F8B #AF9B3F #3FAF63

square

#3F53AF #AF3F8B #AF9B3F #3FAF63

split-complementary

#3F53AF #AF633F #8BAF3F

monochromatic

#1F2855 #2F3E82 #3F53AF #6476C7 #919ED7

Accessibility & contrast

On white

6.85

#3F53AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3F53AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53AF

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53AF	#FFFFFF	#000000	##FFFFFF
##3F53AF	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B60B2

Deuteranopia (green-blind)

#0056AD

Tritanopia (blue-blind)

#006979

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f53af;
/* rgb */ color: rgb(63, 83, 175);
/* oklch */ color: oklch(47.8% 0.148 270.6);

Tailwind

colors: {
  custom: {
    50: '#8083c7',
    500: '#3f53af',
    950: '#000000',
  },
}

SCSS

$custom: #3f53af;
$custom-light: #8083c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53af",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 175
  },
  "hsl": {
    "h": 229.286,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47766,
    "c": 0.14794,
    "h": 270.6
  },
  "luminance": 0.10338
}

Semantic roles & 50–950 ramp

primary

#3F53AF

secondary

#C3B887

accent

#BF51D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F53AF

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

Preview Lab → · Contrast checker → · Palette generator →