#1B159E#1B159E

#1B159E is a dark, highly saturated blue. Relative luminance 0.032; OKLCH L 34.0% C 0.203 H 270.0°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B159E
RGB	rgb(27, 21, 158)
HSL	hsl(243, 77%, 35%)
HSV	hsv(243, 87%, 62%)
CMYK	cmyk(82.9%, 86.7%, 0%, 38%)
CIE-LAB	lab(20.97, 49.12, -70.06)
CIE-LCH	lch(20.97, 85.57, 305.04°)
OKLab	oklab(34.05% 0 -0.2027)
OKLCH	oklch(34.05% 0.203 270)
XYZ	xyz(6.8896, 3.2372, 32.6028)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B159E #989E15

analogous

#15539E #1B159E #60159E

triadic

#1B159E #9E1B15 #159E1B

tetradic

#1B159E #9E1553 #989E15 #159E60

square

#1B159E #9E1553 #989E15 #159E60

split-complementary

#1B159E #9E6015 #539E15

monochromatic

#090732 #120E68 #1B159E #241CD4 #4E47E7

Accessibility & contrast

On white

12.75

#1B159E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B159E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B159E

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B159E	#FFFFFF	#000000	##FFFFFF
##1B159E	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0039A2

Deuteranopia (green-blind)

#002B9C

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b159e;
/* rgb */ color: rgb(27, 21, 158);
/* oklch */ color: oklch(34.0% 0.203 270.0);

Tailwind

colors: {
  custom: {
    50: '#7358bc',
    500: '#1b159e',
    950: '#000000',
  },
}

SCSS

$custom: #1b159e;
$custom-light: #7358bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b159e",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 158
  },
  "hsl": {
    "h": 242.628,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.34049,
    "c": 0.20271,
    "h": 270
  },
  "luminance": 0.03238
}

Semantic roles & 50–950 ramp

primary

#1B159E

secondary

#C2C747

accent

#F335EB

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B159E

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

Preview Lab → · Contrast checker → · Palette generator →