#1B1D97#1B1D97

#1B1D97 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.1% C 0.188 H 270.0°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D97
RGB	rgb(27, 29, 151)
HSL	hsl(239, 70%, 35%)
HSV	hsv(239, 82%, 59%)
CMYK	cmyk(82.1%, 80.8%, 0%, 40.8%)
CIE-LAB	lab(21.38, 43.10, -65.08)
CIE-LCH	lch(21.38, 78.06, 303.52°)
OKLab	oklab(34.08% 0 -0.1885)
OKLCH	oklch(34.08% 0.188 270)
XYZ	xyz(6.4754, 3.3454, 29.5766)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D97 #97951B

analogous

#1B5B97 #1B1D97 #571B97

triadic

#1B1D97 #971B1D #1D971B

tetradic

#1B1D97 #971B5B #97951B #1B9757

square

#1B1D97 #971B5B #97951B #1B9757

split-complementary

#1B1D97 #97571B #5B971B

monochromatic

#08092F #121363 #1B1D97 #2427CB #4D50DF

Accessibility & contrast

On white

12.58

#1B1D97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B1D97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D97

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D97	#FFFFFF	#000000	##FFFFFF
##1B1D97	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9A

Deuteranopia (green-blind)

#002D95

Tritanopia (blue-blind)

#00435A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b1d97;
/* rgb */ color: rgb(27, 29, 151);
/* oklch */ color: oklch(34.1% 0.188 270.0);

Tailwind

colors: {
  custom: {
    50: '#715cb7',
    500: '#1b1d97',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d97;
$custom-light: #715cb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d97",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 151
  },
  "hsl": {
    "h": 239.032,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.34079,
    "c": 0.18848,
    "h": 270
  },
  "luminance": 0.03346
}

Semantic roles & 50–950 ramp

primary

#1B1D97

secondary

#C1C04C

accent

#EA3BEC

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B1D97

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

Preview Lab → · Contrast checker → · Palette generator →