#1B1B97#1B1B97

#1B1B97 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.190 H 270.1°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B1B97
RGB	rgb(27, 27, 151)
HSL	hsl(240, 70%, 35%)
HSV	hsv(240, 82%, 59%)
CMYK	cmyk(82.1%, 82.1%, 0%, 40.8%)
CIE-LAB	lab(21.02, 44.14, -65.68)
CIE-LCH	lch(21.02, 79.13, 303.90°)
OKLab	oklab(33.83% 0.0005 -0.1902)
OKLCH	oklch(33.83% 0.19 270.1)
XYZ	xyz(6.4279, 3.2505, 29.5608)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1B97 #97971B

analogous

#1B5997 #1B1B97 #591B97

triadic

#1B1B97 #971B1B #1B971B

tetradic

#1B1B97 #971B59 #97971B #1B9759

square

#1B1B97 #971B59 #97971B #1B9759

split-complementary

#1B1B97 #97591B #59971B

monochromatic

#08082F #121263 #1B1B97 #2424CB #4D4DDF

Accessibility & contrast

On white

12.73

#1B1B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B1B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1B97

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1B97	#FFFFFF	#000000	##FFFFFF
##1B1B97	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399A

Deuteranopia (green-blind)

#002C95

Tritanopia (blue-blind)

#00425A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b1b97;
/* rgb */ color: rgb(27, 27, 151);
/* oklch */ color: oklch(33.8% 0.190 270.1);

Tailwind

colors: {
  custom: {
    50: '#715bb7',
    500: '#1b1b97',
    950: '#000000',
  },
}

SCSS

$custom: #1b1b97;
$custom-light: #715bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1b97",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 151
  },
  "hsl": {
    "h": 240,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.3383,
    "c": 0.19016,
    "h": 270.1
  },
  "luminance": 0.03251
}

Semantic roles & 50–950 ramp

primary

#1B1B97

secondary

#C1C14C

accent

#EC3BEC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B1B97

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

Preview Lab → · Contrast checker → · Palette generator →