#1B47A1#1B47A1

#1B47A1 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.5% C 0.154 H 262.4°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B47A1
RGB	rgb(27, 71, 161)
HSL	hsl(220, 71%, 37%)
HSV	hsv(220, 83%, 63%)
CMYK	cmyk(83.2%, 55.9%, 0%, 36.9%)
CIE-LAB	lab(32.51, 19.96, -52.90)
CIE-LCH	lch(32.51, 56.54, 290.67°)
OKLab	oklab(42.52% -0.0205 -0.1527)
OKLCH	oklch(42.52% 0.154 262.4)
XYZ	xyz(9.1359, 7.3116, 34.6411)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B47A1 #A1751B

analogous

#1B8AA1 #1B47A1 #321BA1

triadic

#1B47A1 #A11B47 #47A11B

tetradic

#1B47A1 #A11B8A #A1751B #1BA132

square

#1B47A1 #A11B8A #A1751B #1BA132

split-complementary

#1B47A1 #A1321B #8AA11B

monochromatic

#091938 #12306D #1B47A1 #245ED5 #5483E2

Accessibility & contrast

On white

8.53

#1B47A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1B47A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B47A1

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B47A1	#FFFFFF	#000000	##FFFFFF
##1B47A1	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A4

Deuteranopia (green-blind)

#00479F

Tritanopia (blue-blind)

#005D6D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b47a1;
/* rgb */ color: rgb(27, 71, 161);
/* oklch */ color: oklch(42.5% 0.154 262.4);

Tailwind

colors: {
  custom: {
    50: '#7079be',
    500: '#1b47a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b47a1;
$custom-light: #7079be;
$custom-dark: #000000;

JSON

{
  "hex": "#1b47a1",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 161
  },
  "hsl": {
    "h": 220.299,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.42515,
    "c": 0.1541,
    "h": 262.4
  },
  "luminance": 0.07313
}

Semantic roles & 50–950 ramp

primary

#1B47A1

secondary

#C5A052

accent

#B33AEE

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B47A1

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

Preview Lab → · Contrast checker → · Palette generator →