#1B136C#1B136C

#1B136C is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.6% C 0.144 H 275.4°. Best body text is #FFFFFF at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B136C
RGB	rgb(27, 19, 108)
HSL	hsl(245, 70%, 25%)
HSV	hsv(245, 82%, 42%)
CMYK	cmyk(75%, 82.4%, 0%, 57.6%)
CIE-LAB	lab(14.29, 34.02, -49.55)
CIE-LCH	lch(14.29, 60.10, 304.47°)
OKLab	oklab(27.61% 0.0135 -0.1433)
OKLCH	oklch(27.61% 0.144 275.4)
XYZ	xyz(3.3907, 1.7811, 14.3495)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B136C #646C13

analogous

#13386C #1B136C #47136C

triadic

#1B136C #6C1B13 #136C1B

tetradic

#1B136C #6C1338 #646C13 #136C47

square

#1B136C #6C1338 #646C13 #136C47

split-complementary

#1B136C #6C4713 #386C13

monochromatic

#07051A #0E0A38 #1B136C #281CA0 #3525D4

Accessibility & contrast

On white

15.48

#1B136C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B136C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B136C

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B136C	#FFFFFF	#000000	##FFFFFF
##1B136C	1.00	15.48	1.36	15.48
#FFFFFF	15.48	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286E

Deuteranopia (green-blind)

#00206A

Tritanopia (blue-blind)

#002E3F

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b136c;
/* rgb */ color: rgb(27, 19, 108);
/* oklch */ color: oklch(27.6% 0.144 275.4);

Tailwind

colors: {
  custom: {
    50: '#665397',
    500: '#1b136c',
    950: '#000000',
  },
}

SCSS

$custom: #1b136c;
$custom-light: #665397;
$custom-dark: #000000;

JSON

{
  "hex": "#1b136c",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 108
  },
  "hsl": {
    "h": 245.393,
    "s": 70.079,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27609,
    "c": 0.1439,
    "h": 275.4
  },
  "luminance": 0.01781
}

Semantic roles & 50–950 ramp

primary

#1B136C

secondary

#99A338

accent

#ED3BDD

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B136C

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

Preview Lab → · Contrast checker → · Palette generator →