#3047B1#3047B1

#3047B1 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.7% C 0.170 H 269.0°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3047B1
RGB	rgb(48, 71, 177)
HSL	hsl(229, 57%, 44%)
HSV	hsv(229, 73%, 69%)
CMYK	cmyk(72.9%, 59.9%, 0%, 30.6%)
CIE-LAB	lab(34.62, 28.44, -59.00)
CIE-LCH	lch(34.62, 65.50, 295.74°)
OKLab	oklab(44.73% -0.003 -0.1703)
OKLCH	oklch(44.73% 0.17 269)
XYZ	xyz(11.4052, 8.3080, 42.5890)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3047B1 #B19A30

analogous

#3088B1 #3047B1 #5A30B1

triadic

#3047B1 #B13047 #47B130

tetradic

#3047B1 #B13088 #B19A30 #30B15A

square

#3047B1 #B13088 #B19A30 #30B15A

split-complementary

#3047B1 #B15A30 #88B130

monochromatic

#162051 #233481 #3047B1 #4F66CF #7F90DC

Accessibility & contrast

On white

7.89

#3047B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3047B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3047B1

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3047B1	#FFFFFF	#000000	##FFFFFF
##3047B1	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B5

Deuteranopia (green-blind)

#004CAF

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3047b1;
/* rgb */ color: rgb(48, 71, 177);
/* oklch */ color: oklch(44.7% 0.170 269.0);

Tailwind

colors: {
  custom: {
    50: '#7a7ac9',
    500: '#3047b1',
    950: '#000000',
  },
}

SCSS

$custom: #3047b1;
$custom-light: #7a7ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#3047b1",
  "rgb": {
    "r": 48,
    "g": 71,
    "b": 177
  },
  "hsl": {
    "h": 229.302,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44729,
    "c": 0.17029,
    "h": 269
  },
  "luminance": 0.08309
}

Semantic roles & 50–950 ramp

primary

#3047B1

secondary

#C5B778

accent

#C547E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3047B1

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

Preview Lab → · Contrast checker → · Palette generator →