#1B1173#1B1173

#1B1173 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.155 H 274.6°. Best body text is #FFFFFF at 15.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B1173
RGB	rgb(27, 17, 115)
HSL	hsl(246, 74%, 26%)
HSV	hsv(246, 85%, 45%)
CMYK	cmyk(76.5%, 85.2%, 0%, 54.9%)
CIE-LAB	lab(14.80, 37.41, -53.27)
CIE-LCH	lch(14.80, 65.09, 305.08°)
OKLab	oklab(28.21% 0.0124 -0.154)
OKLCH	oklch(28.21% 0.155 274.6)
XYZ	xyz(3.7459, 1.8713, 16.3801)
Luminance	0.0187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1173 #697311

analogous

#113873 #1B1173 #4C1173

triadic

#1B1173 #731B11 #11731B

tetradic

#1B1173 #731138 #697311 #11734C

square

#1B1173 #731138 #697311 #11734C

split-complementary

#1B1173 #734C11 #387311

monochromatic

#06041B #0E093E #1B1173 #2819A8 #3421DE

Accessibility & contrast

On white

15.28

#1B1173 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B1173 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1173

15.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1173	#FFFFFF	#000000	##FFFFFF
##1B1173	1.00	15.28	1.37	15.28
#FFFFFF	15.28	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A76

Deuteranopia (green-blind)

#002171

Tritanopia (blue-blind)

#003043

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1173;
/* rgb */ color: rgb(27, 17, 115);
/* oklch */ color: oklch(28.2% 0.155 274.6);

Tailwind

colors: {
  custom: {
    50: '#68529c',
    500: '#1b1173',
    950: '#000000',
  },
}

SCSS

$custom: #1b1173;
$custom-light: #68529c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1173",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 115
  },
  "hsl": {
    "h": 246.122,
    "s": 74.242,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28211,
    "c": 0.15454,
    "h": 274.6
  },
  "luminance": 0.01872
}

Semantic roles & 50–950 ramp

primary

#1B1173

secondary

#9EAA36

accent

#F137DE

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B1173

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

Preview Lab → · Contrast checker → · Palette generator →