#3F48A4#3F48A4

#3F48A4 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.7% C 0.147 H 274.6°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F48A4
RGB	rgb(63, 72, 164)
HSL	hsl(235, 44%, 45%)
HSV	hsv(235, 62%, 64%)
CMYK	cmyk(61.6%, 56.1%, 0%, 35.7%)
CIE-LAB	lab(34.74, 25.42, -51.00)
CIE-LCH	lch(34.74, 56.98, 296.50°)
OKLab	oklab(44.74% 0.0118 -0.1464)
OKLCH	oklch(44.74% 0.147 274.6)
XYZ	xyz(11.0659, 8.3710, 36.1474)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F48A4 #A49B3F

analogous

#3F7BA4 #3F48A4 #683FA4

triadic

#3F48A4 #A43F48 #48A43F

tetradic

#3F48A4 #A43F7B #A49B3F #3FA468

square

#3F48A4 #A43F7B #A49B3F #3FA468

split-complementary

#3F48A4 #A4683F #7BA43F

monochromatic

#1D214C #2E3578 #3F48A4 #5F68C1 #8B91D2

Accessibility & contrast

On white

7.85

#3F48A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3F48A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48A4

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48A4	#FFFFFF	#000000	##FFFFFF
##3F48A4	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A7

Deuteranopia (green-blind)

#004DA2

Tritanopia (blue-blind)

#005E6F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f48a4;
/* rgb */ color: rgb(63, 72, 164);
/* oklch */ color: oklch(44.7% 0.147 274.6);

Tailwind

colors: {
  custom: {
    50: '#7e7ac0',
    500: '#3f48a4',
    950: '#000000',
  },
}

SCSS

$custom: #3f48a4;
$custom-light: #7e7ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48a4",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 164
  },
  "hsl": {
    "h": 234.653,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.44741,
    "c": 0.14684,
    "h": 274.6
  },
  "luminance": 0.08372
}

Semantic roles & 50–950 ramp

primary

#3F48A4

secondary

#BDB882

accent

#C954D4

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F48A4

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

Preview Lab → · Contrast checker → · Palette generator →