#3148A4#3148A4

#3148A4 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.9% C 0.151 H 268.8°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3148A4
RGB	rgb(49, 72, 164)
HSL	hsl(228, 54%, 42%)
HSV	hsv(228, 70%, 64%)
CMYK	cmyk(70.1%, 56.1%, 0%, 35.7%)
CIE-LAB	lab(33.91, 23.10, -52.38)
CIE-LCH	lch(33.91, 57.25, 293.80°)
OKLab	oklab(43.9% -0.0032 -0.1508)
OKLCH	oklch(43.9% 0.151 268.8)
XYZ	xyz(10.2825, 7.9670, 36.1107)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3148A4 #A48D31

analogous

#3182A4 #3148A4 #5431A4

triadic

#3148A4 #A43148 #48A431

tetradic

#3148A4 #A43182 #A48D31 #31A454

square

#3148A4 #A43182 #A48D31 #31A454

split-complementary

#3148A4 #A45431 #82A431

monochromatic

#151F46 #233375 #3148A4 #4963C9 #798BD7

Accessibility & contrast

On white

8.10

#3148A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3148A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3148A4

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3148A4	#FFFFFF	#000000	##FFFFFF
##3148A4	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A7

Deuteranopia (green-blind)

#004BA2

Tritanopia (blue-blind)

#005E6F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3148a4;
/* rgb */ color: rgb(49, 72, 164);
/* oklch */ color: oklch(43.9% 0.151 268.8);

Tailwind

colors: {
  custom: {
    50: '#787ac0',
    500: '#3148a4',
    950: '#000000',
  },
}

SCSS

$custom: #3148a4;
$custom-light: #787ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#3148a4",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 164
  },
  "hsl": {
    "h": 228,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.43898,
    "c": 0.15081,
    "h": 268.8
  },
  "luminance": 0.07968
}

Semantic roles & 50–950 ramp

primary

#3148A4

secondary

#BFB072

accent

#C04ADD

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #3148A4

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

Preview Lab → · Contrast checker → · Palette generator →