#1B158E#1B158E

#1B158E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.184 H 271.2°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B158E
RGB	rgb(27, 21, 142)
HSL	hsl(243, 74%, 32%)
HSV	hsv(243, 85%, 56%)
CMYK	cmyk(81%, 85.2%, 0%, 44.3%)
CIE-LAB	lab(18.89, 44.17, -63.63)
CIE-LCH	lch(18.89, 77.46, 304.77°)
OKLab	oklab(32.03% 0.0039 -0.1841)
OKLCH	oklch(32.03% 0.184 271.2)
XYZ	xyz(5.6010, 2.7217, 25.8161)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B158E #888E15

analogous

#154C8E #1B158E #58158E

triadic

#1B158E #8E1B15 #158E1B

tetradic

#1B158E #8E154C #888E15 #158E58

square

#1B158E #8E154C #888E15 #158E58

split-complementary

#1B158E #8E5815 #4C8E15

monochromatic

#070523 #110D59 #1B158E #251DC3 #443BE2

Accessibility & contrast

On white

13.60

#1B158E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1B158E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B158E

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B158E	#FFFFFF	#000000	##FFFFFF
##1B158E	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00288C

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b158e;
/* rgb */ color: rgb(27, 21, 142);
/* oklch */ color: oklch(32.0% 0.184 271.2);

Tailwind

colors: {
  custom: {
    50: '#6f57b0',
    500: '#1b158e',
    950: '#000000',
  },
}

SCSS

$custom: #1b158e;
$custom-light: #6f57b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b158e",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 142
  },
  "hsl": {
    "h": 242.975,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3203,
    "c": 0.18415,
    "h": 271.2
  },
  "luminance": 0.02722
}

Semantic roles & 50–950 ramp

primary

#1B158E

secondary

#BBC23D

accent

#F137E8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B158E

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

Preview Lab → · Contrast checker → · Palette generator →