#1B18A0#1B18A0

#1B18A0 is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.6% C 0.203 H 269.7°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B18A0
RGB	rgb(27, 24, 160)
HSL	hsl(241, 74%, 36%)
HSV	hsv(241, 85%, 63%)
CMYK	cmyk(83.1%, 85%, 0%, 37.3%)
CIE-LAB	lab(21.67, 48.44, -70.13)
CIE-LCH	lch(21.67, 85.23, 304.63°)
OKLab	oklab(34.6% -0.0009 -0.203)
OKLCH	oklch(34.6% 0.203 269.7)
XYZ	xyz(7.1216, 3.4235, 33.5363)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B18A0 #9DA018

analogous

#1859A0 #1B18A0 #5F18A0

triadic

#1B18A0 #A01B18 #18A01B

tetradic

#1B18A0 #A01859 #9DA018 #18A05F

square

#1B18A0 #A01859 #9DA018 #18A05F

split-complementary

#1B18A0 #A05F18 #59A018

monochromatic

#090836 #12106B #1B18A0 #2420D5 #514EE4

Accessibility & contrast

On white

12.46

#1B18A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B18A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B18A0

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B18A0	#FFFFFF	#000000	##FFFFFF
##1B18A0	1.00	12.46	1.68	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA4

Deuteranopia (green-blind)

#002D9E

Tritanopia (blue-blind)

#00455F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b18a0;
/* rgb */ color: rgb(27, 24, 160);
/* oklch */ color: oklch(34.6% 0.203 269.7);

Tailwind

colors: {
  custom: {
    50: '#745abe',
    500: '#1b18a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b18a0;
$custom-light: #745abe;
$custom-dark: #000000;

JSON

{
  "hex": "#1b18a0",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 160
  },
  "hsl": {
    "h": 241.324,
    "s": 73.913,
    "l": 36.078
  },
  "oklch": {
    "l": 0.34601,
    "c": 0.20297,
    "h": 269.7
  },
  "luminance": 0.03424
}

Semantic roles & 50–950 ramp

primary

#1B18A0

secondary

#C4C64D

accent

#F137EC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B18A0

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

Preview Lab → · Contrast checker → · Palette generator →