#1B156F#1B156F

#1B156F is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.146 H 274.6°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B156F
RGB	rgb(27, 21, 111)
HSL	hsl(244, 68%, 26%)
HSV	hsv(244, 81%, 44%)
CMYK	cmyk(75.7%, 81.1%, 0%, 56.5%)
CIE-LAB	lab(15.04, 33.93, -50.26)
CIE-LCH	lch(15.04, 60.64, 304.02°)
OKLab	oklab(28.24% 0.0118 -0.1454)
OKLCH	oklch(28.24% 0.146 274.6)
XYZ	xyz(3.5885, 1.9167, 15.2167)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B156F #696F15

analogous

#153C6F #1B156F #48156F

triadic

#1B156F #6F1B15 #156F1B

tetradic

#1B156F #6F153C #696F15 #156F48

square

#1B156F #6F153C #696F15 #156F48

split-complementary

#1B156F #6F4815 #3C6F15

monochromatic

#06051A #0E0B3C #1B156F #281FA2 #3428D6

Accessibility & contrast

On white

15.18

#1B156F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B156F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B156F

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B156F	#FFFFFF	#000000	##FFFFFF
##1B156F	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A72

Deuteranopia (green-blind)

#00226D

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b156f;
/* rgb */ color: rgb(27, 21, 111);
/* oklch */ color: oklch(28.2% 0.146 274.6);

Tailwind

colors: {
  custom: {
    50: '#675499',
    500: '#1b156f',
    950: '#000000',
  },
}

SCSS

$custom: #1b156f;
$custom-light: #675499;
$custom-dark: #000000;

JSON

{
  "hex": "#1b156f",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 111
  },
  "hsl": {
    "h": 244,
    "s": 68.182,
    "l": 25.882
  },
  "oklch": {
    "l": 0.2824,
    "c": 0.14586,
    "h": 274.6
  },
  "luminance": 0.01917
}

Semantic roles & 50–950 ramp

primary

#1B156F

secondary

#9EA53A

accent

#EB3DDF

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B156F

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

Preview Lab → · Contrast checker → · Palette generator →