#1B1775#1B1775

#1B1775 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.2% C 0.152 H 273.6°. Best body text is #FFFFFF at 14.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B1775
RGB	rgb(27, 23, 117)
HSL	hsl(243, 67%, 27%)
HSV	hsv(243, 80%, 46%)
CMYK	cmyk(76.9%, 80.3%, 0%, 54.1%)
CIE-LAB	lab(16.15, 34.86, -52.32)
CIE-LCH	lch(16.15, 62.87, 303.68°)
OKLab	oklab(29.23% 0.0094 -0.1514)
OKLCH	oklch(29.23% 0.152 273.6)
XYZ	xyz(3.9682, 2.1298, 17.0281)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1775 #717517

analogous

#174275 #1B1775 #4A1775

triadic

#1B1775 #751B17 #17751B

tetradic

#1B1775 #751742 #717517 #17754A

square

#1B1775 #751742 #717517 #17754A

split-complementary

#1B1775 #754A17 #427517

monochromatic

#06051A #0F0D42 #1B1775 #2721A8 #3730D6

Accessibility & contrast

On white

14.73

#1B1775 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1B1775 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1775

14.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1775	#FFFFFF	#000000	##FFFFFF
##1B1775	1.00	14.73	1.43	14.73
#FFFFFF	14.73	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C78

Deuteranopia (green-blind)

#002473

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b1775;
/* rgb */ color: rgb(27, 23, 117);
/* oklch */ color: oklch(29.2% 0.152 273.6);

Tailwind

colors: {
  custom: {
    50: '#68569e',
    500: '#1b1775',
    950: '#000000',
  },
}

SCSS

$custom: #1b1775;
$custom-light: #68569e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1775",
  "rgb": {
    "r": 27,
    "g": 23,
    "b": 117
  },
  "hsl": {
    "h": 242.553,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29229,
    "c": 0.15165,
    "h": 273.6
  },
  "luminance": 0.0213
}

Semantic roles & 50–950 ramp

primary

#1B1775

secondary

#A6AA3D

accent

#EA3EE3

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1775

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

Preview Lab → · Contrast checker → · Palette generator →