#1B147B#1B147B

#1B147B is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.162 H 273.2°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B147B
RGB	rgb(27, 20, 123)
HSL	hsl(244, 72%, 28%)
HSV	hsv(244, 84%, 48%)
CMYK	cmyk(78%, 83.7%, 0%, 51.8%)
CIE-LAB	lab(16.32, 38.52, -55.90)
CIE-LCH	lch(16.32, 67.88, 304.57°)
OKLab	oklab(29.56% 0.0091 -0.1617)
OKLCH	oklch(29.56% 0.162 273.2)
XYZ	xyz(4.2761, 2.1629, 18.9272)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B147B #747B14

analogous

#14407B #1B147B #4E147B

triadic

#1B147B #7B1B14 #147B1B

tetradic

#1B147B #7B1440 #747B14 #147B4E

square

#1B147B #7B1440 #747B14 #147B4E

split-complementary

#1B147B #7B4E14 #407B14

monochromatic

#06041A #0F0B46 #1B147B #271DB0 #392DDD

Accessibility & contrast

On white

14.66

#1B147B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B147B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B147B

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B147B	#FFFFFF	#000000	##FFFFFF
##1B147B	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7E

Deuteranopia (green-blind)

#002379

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b147b;
/* rgb */ color: rgb(27, 20, 123);
/* oklch */ color: oklch(29.6% 0.162 273.2);

Tailwind

colors: {
  custom: {
    50: '#6a55a2',
    500: '#1b147b',
    950: '#000000',
  },
}

SCSS

$custom: #1b147b;
$custom-light: #6a55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b147b",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 123
  },
  "hsl": {
    "h": 244.078,
    "s": 72.028,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29558,
    "c": 0.16196,
    "h": 273.2
  },
  "luminance": 0.02163
}

Semantic roles & 50–950 ramp

primary

#1B147B

secondary

#A9B13A

accent

#EF39E2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B147B

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

Preview Lab → · Contrast checker → · Palette generator →