#1B156A#1B156A

#1B156A is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.139 H 275.4°. Best body text is #FFFFFF at 15.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B156A
RGB	rgb(27, 21, 106)
HSL	hsl(244, 67%, 25%)
HSV	hsv(244, 80%, 42%)
CMYK	cmyk(74.5%, 80.2%, 0%, 58.4%)
CIE-LAB	lab(14.45, 32.19, -47.97)
CIE-LCH	lch(14.45, 57.77, 303.86°)
OKLab	oklab(27.65% 0.013 -0.1387)
OKLCH	oklch(27.65% 0.139 275.4)
XYZ	xyz(3.3208, 1.8096, 13.8072)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B156A #646A15

analogous

#153A6A #1B156A #45156A

triadic

#1B156A #6A1B15 #156A1B

tetradic

#1B156A #6A153A #646A15 #156A45

square

#1B156A #6A153A #646A15 #156A45

split-complementary

#1B156A #6A4515 #3A6A15

monochromatic

#07051A #0E0B37 #1B156A #281F9D #3529D0

Accessibility & contrast

On white

15.42

#1B156A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B156A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B156A

15.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B156A	#FFFFFF	#000000	##FFFFFF
##1B156A	1.00	15.42	1.36	15.42
#FFFFFF	15.42	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286C

Deuteranopia (green-blind)

#002168

Tritanopia (blue-blind)

#002E3F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b156a;
/* rgb */ color: rgb(27, 21, 106);
/* oklch */ color: oklch(27.7% 0.139 275.4);

Tailwind

colors: {
  custom: {
    50: '#655496',
    500: '#1b156a',
    950: '#000000',
  },
}

SCSS

$custom: #1b156a;
$custom-light: #655496;
$custom-dark: #000000;

JSON

{
  "hex": "#1b156a",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 106
  },
  "hsl": {
    "h": 244.235,
    "s": 66.929,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27652,
    "c": 0.13932,
    "h": 275.4
  },
  "luminance": 0.0181
}

Semantic roles & 50–950 ramp

primary

#1B156A

secondary

#99A13A

accent

#EA3EDE

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1B156A

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

Preview Lab → · Contrast checker → · Palette generator →