#3148B3#3148B3

#3148B3 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.1% C 0.171 H 269.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#3148B3
RGB	rgb(49, 72, 179)
HSL	hsl(229, 57%, 45%)
HSV	hsv(229, 73%, 70%)
CMYK	cmyk(72.6%, 59.8%, 0%, 29.8%)
CIE-LAB	lab(35.09, 28.66, -59.41)
CIE-LCH	lch(35.09, 65.96, 295.75°)
OKLab	oklab(45.14% -0.0028 -0.1715)
OKLCH	oklch(45.14% 0.171 269.1)
XYZ	xyz(11.7179, 8.5412, 43.6701)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3148B3 #B39C31

analogous

#3189B3 #3148B3 #5B31B3

triadic

#3148B3 #B33148 #48B331

tetradic

#3148B3 #B33189 #B39C31 #31B35B

square

#3148B3 #B33189 #B39C31 #31B35B

split-complementary

#3148B3 #B35B31 #89B331

monochromatic

#172153 #243583 #3148B3 #5268D0 #8292DD

Accessibility & contrast

On white

7.75

#3148B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3148B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3148B3

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3148B3	#FFFFFF	#000000	##FFFFFF
##3148B3	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B7

Deuteranopia (green-blind)

#004DB1

Tritanopia (blue-blind)

#006376

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3148b3;
/* rgb */ color: rgb(49, 72, 179);
/* oklch */ color: oklch(45.1% 0.171 269.1);

Tailwind

colors: {
  custom: {
    50: '#7b7acb',
    500: '#3148b3',
    950: '#000000',
  },
}

SCSS

$custom: #3148b3;
$custom-light: #7b7acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3148b3",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 179
  },
  "hsl": {
    "h": 229.385,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.45142,
    "c": 0.17148,
    "h": 269.1
  },
  "luminance": 0.08542
}

Semantic roles & 50–950 ramp

primary

#3148B3

secondary

#C6B87A

accent

#C548E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3148B3

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

Preview Lab → · Contrast checker → · Palette generator →