#1B158F#1B158F

#1B158F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.185 H 271.1°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B158F
RGB	rgb(27, 21, 143)
HSL	hsl(243, 74%, 32%)
HSV	hsv(243, 85%, 56%)
CMYK	cmyk(81.1%, 85.3%, 0%, 43.9%)
CIE-LAB	lab(19.02, 44.49, -64.04)
CIE-LCH	lch(19.02, 77.97, 304.79°)
OKLab	oklab(32.16% 0.0037 -0.1853)
OKLCH	oklch(32.16% 0.185 271.1)
XYZ	xyz(5.6764, 2.7519, 26.2133)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B158F #898F15

analogous

#154C8F #1B158F #58158F

triadic

#1B158F #8F1B15 #158F1B

tetradic

#1B158F #8F154C #898F15 #158F58

square

#1B158F #8F154C #898F15 #158F58

split-complementary

#1B158F #8F5815 #4C8F15

monochromatic

#070524 #110D5A #1B158F #251DC4 #443CE2

Accessibility & contrast

On white

13.54

#1B158F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B158F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B158F

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B158F	#FFFFFF	#000000	##FFFFFF
##1B158F	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003492

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b158f;
/* rgb */ color: rgb(27, 21, 143);
/* oklch */ color: oklch(32.2% 0.185 271.1);

Tailwind

colors: {
  custom: {
    50: '#6f57b1',
    500: '#1b158f',
    950: '#000000',
  },
}

SCSS

$custom: #1b158f;
$custom-light: #6f57b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b158f",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 143
  },
  "hsl": {
    "h": 242.951,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32156,
    "c": 0.18534,
    "h": 271.1
  },
  "luminance": 0.02753
}

Semantic roles & 50–950 ramp

primary

#1B158F

secondary

#BCC23E

accent

#F137E8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B158F

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

Preview Lab → · Contrast checker → · Palette generator →