#1D47BB#1D47BB

#1D47BB is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.9% C 0.188 H 264.5°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D47BB
RGB	rgb(29, 71, 187)
HSL	hsl(224, 73%, 42%)
HSV	hsv(224, 84%, 73%)
CMYK	cmyk(84.5%, 62%, 0%, 26.7%)
CIE-LAB	lab(34.71, 30.34, -64.78)
CIE-LCH	lch(34.71, 71.53, 295.09°)
OKLab	oklab(44.85% -0.018 -0.1876)
OKLCH	oklch(44.85% 0.188 264.5)
XYZ	xyz(11.7264, 8.3541, 47.9985)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D47BB #BB911D

analogous

#1D96BB #1D47BB #421DBB

triadic

#1D47BB #BB1D47 #47BB1D

tetradic

#1D47BB #BB1D96 #BB911D #1DBB42

square

#1D47BB #BB1D96 #BB911D #1DBB42

split-complementary

#1D47BB #BB421D #96BB1D

monochromatic

#0D1F51 #153386 #1D47BB #3563E0 #6A8CE8

Accessibility & contrast

On white

7.86

#1D47BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1D47BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D47BB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D47BB	#FFFFFF	#000000	##FFFFFF
##1D47BB	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d47bb;
/* rgb */ color: rgb(29, 71, 187);
/* oklch */ color: oklch(44.9% 0.188 264.5);

Tailwind

colors: {
  custom: {
    50: '#7779d0',
    500: '#1d47bb',
    950: '#000000',
  },
}

SCSS

$custom: #1d47bb;
$custom-light: #7779d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d47bb",
  "rgb": {
    "r": 29,
    "g": 71,
    "b": 187
  },
  "hsl": {
    "h": 224.051,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.44851,
    "c": 0.18843,
    "h": 264.5
  },
  "luminance": 0.08356
}

Semantic roles & 50–950 ramp

primary

#1D47BB

secondary

#CEB266

accent

#BF38F0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0914

muted

#7C7B82

Preview Lab

Preview with #1D47BB

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

Preview Lab → · Contrast checker → · Palette generator →