#1B47BC#1B47BC

#1B47BC is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.9% C 0.190 H 264.2°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B47BC
RGB	rgb(27, 71, 188)
HSL	hsl(224, 75%, 42%)
HSV	hsv(224, 86%, 74%)
CMYK	cmyk(85.6%, 62.2%, 0%, 26.3%)
CIE-LAB	lab(34.74, 30.58, -65.32)
CIE-LCH	lch(34.74, 72.13, 295.09°)
OKLab	oklab(44.88% -0.0193 -0.1892)
OKLCH	oklch(44.88% 0.19 264.2)
XYZ	xyz(11.7791, 8.3688, 48.5617)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B47BC #BC901B

analogous

#1B98BC #1B47BC #3F1BBC

triadic

#1B47BC #BC1B47 #47BC1B

tetradic

#1B47BC #BC1B98 #BC901B #1BBC3F

square

#1B47BC #BC1B98 #BC901B #1BBC3F

split-complementary

#1B47BC #BC3F1B #98BC1B

monochromatic

#0C1F51 #133386 #1B47BC #3362E2 #688BE9

Accessibility & contrast

On white

7.85

#1B47BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1B47BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B47BC

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B47BC	#FFFFFF	#000000	##FFFFFF
##1B47BC	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)

#0059C0

Deuteranopia (green-blind)

#004ABA

Tritanopia (blue-blind)

#00667B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b47bc;
/* rgb */ color: rgb(27, 71, 188);
/* oklch */ color: oklch(44.9% 0.190 264.2);

Tailwind

colors: {
  custom: {
    50: '#7779d1',
    500: '#1b47bc',
    950: '#000000',
  },
}

SCSS

$custom: #1b47bc;
$custom-light: #7779d1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b47bc",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 188
  },
  "hsl": {
    "h": 223.602,
    "s": 74.884,
    "l": 42.157
  },
  "oklch": {
    "l": 0.44884,
    "c": 0.19015,
    "h": 264.2
  },
  "luminance": 0.0837
}

Semantic roles & 50–950 ramp

primary

#1B47BC

secondary

#CFB264

accent

#BE36F2

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #1B47BC

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

Preview Lab → · Contrast checker → · Palette generator →