#3148B1#3148B1

#3148B1 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 45.0% C 0.169 H 269.1°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3148B1
RGB	rgb(49, 72, 177)
HSL	hsl(229, 57%, 44%)
HSV	hsv(229, 72%, 69%)
CMYK	cmyk(72.3%, 59.3%, 0%, 30.6%)
CIE-LAB	lab(34.92, 27.92, -58.49)
CIE-LCH	lch(34.92, 64.81, 295.52°)
OKLab	oklab(44.97% -0.0028 -0.1687)
OKLCH	oklch(44.97% 0.169 269.1)
XYZ	xyz(11.5171, 8.4608, 42.6126)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3148B1 #B19A31

analogous

#3188B1 #3148B1 #5A31B1

triadic

#3148B1 #B13148 #48B131

tetradic

#3148B1 #B13188 #B19A31 #31B15A

square

#3148B1 #B13188 #B19A31 #31B15A

split-complementary

#3148B1 #B15A31 #88B131

monochromatic

#162151 #243581 #3148B1 #5167CF #8091DC

Accessibility & contrast

On white

7.80

#3148B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3148B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3148B1

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3148B1	#FFFFFF	#000000	##FFFFFF
##3148B1	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B5

Deuteranopia (green-blind)

#004CAF

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3148b1;
/* rgb */ color: rgb(49, 72, 177);
/* oklch */ color: oklch(45.0% 0.169 269.1);

Tailwind

colors: {
  custom: {
    50: '#7b7ac9',
    500: '#3148b1',
    950: '#000000',
  },
}

SCSS

$custom: #3148b1;
$custom-light: #7b7ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#3148b1",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 177
  },
  "hsl": {
    "h": 229.219,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.44972,
    "c": 0.16876,
    "h": 269.1
  },
  "luminance": 0.08462
}

Semantic roles & 50–950 ramp

primary

#3148B1

secondary

#C5B779

accent

#C548E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3148B1

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

Preview Lab → · Contrast checker → · Palette generator →