#1B136B#1B136B

#1B136B is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.5% C 0.143 H 275.6°. Best body text is #FFFFFF at 15.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B136B
RGB	rgb(27, 19, 107)
HSL	hsl(245, 70%, 25%)
HSV	hsv(245, 82%, 42%)
CMYK	cmyk(74.8%, 82.2%, 0%, 58%)
CIE-LAB	lab(14.17, 33.68, -49.09)
CIE-LCH	lch(14.17, 59.53, 304.45°)
OKLab	oklab(27.49% 0.0138 -0.1419)
OKLCH	oklch(27.49% 0.143 275.6)
XYZ	xyz(3.3378, 1.7600, 14.0709)
Luminance	0.0176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B136B #636B13

analogous

#13376B #1B136B #47136B

triadic

#1B136B #6B1B13 #136B1B

tetradic

#1B136B #6B1337 #636B13 #136B47

square

#1B136B #6B1337 #636B13 #136B47

split-complementary

#1B136B #6B4713 #376B13

monochromatic

#07051A #0E0A37 #1B136B #281C9F #3525D3

Accessibility & contrast

On white

15.53

#1B136B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1B136B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B136B

15.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B136B	#FFFFFF	#000000	##FFFFFF
##1B136B	1.00	15.53	1.35	15.53
#FFFFFF	15.53	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286D

Deuteranopia (green-blind)

#002069

Tritanopia (blue-blind)

#002E3F

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b136b;
/* rgb */ color: rgb(27, 19, 107);
/* oklch */ color: oklch(27.5% 0.143 275.6);

Tailwind

colors: {
  custom: {
    50: '#665396',
    500: '#1b136b',
    950: '#000000',
  },
}

SCSS

$custom: #1b136b;
$custom-light: #665396;
$custom-dark: #000000;

JSON

{
  "hex": "#1b136b",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 107
  },
  "hsl": {
    "h": 245.455,
    "s": 69.841,
    "l": 24.706
  },
  "oklch": {
    "l": 0.27489,
    "c": 0.14261,
    "h": 275.6
  },
  "luminance": 0.0176
}

Semantic roles & 50–950 ramp

primary

#1B136B

secondary

#98A238

accent

#ED3BDD

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020D

muted

#7A787E

Preview Lab

Preview with #1B136B

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

Preview Lab → · Contrast checker → · Palette generator →