#1B118C#1B118C

#1B118C is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.4% C 0.185 H 271.6°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B118C
RGB	rgb(27, 17, 140)
HSL	hsl(245, 78%, 31%)
HSV	hsv(245, 88%, 55%)
CMYK	cmyk(80.7%, 87.9%, 0%, 45.1%)
CIE-LAB	lab(18.04, 45.31, -63.80)
CIE-LCH	lch(18.04, 78.25, 305.38°)
OKLab	oklab(31.37% 0.0053 -0.1845)
OKLCH	oklch(31.37% 0.185 271.6)
XYZ	xyz(5.3845, 2.5268, 25.0098)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B118C #828C11

analogous

#11448C #1B118C #58118C

triadic

#1B118C #8C1B11 #118C1B

tetradic

#1B118C #8C1144 #828C11 #118C58

square

#1B118C #8C1144 #828C11 #118C58

split-complementary

#1B118C #8C5811 #448C11

monochromatic

#06041F #100A55 #1B118C #2618C3 #4031E6

Accessibility & contrast

On white

13.95

#1B118C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B118C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B118C

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B118C	#FFFFFF	#000000	##FFFFFF
##1B118C	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328F

Deuteranopia (green-blind)

#00268A

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b118c;
/* rgb */ color: rgb(27, 17, 140);
/* oklch */ color: oklch(31.4% 0.185 271.6);

Tailwind

colors: {
  custom: {
    50: '#6f55af',
    500: '#1b118c',
    950: '#000000',
  },
}

SCSS

$custom: #1b118c;
$custom-light: #6f55af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b118c",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 140
  },
  "hsl": {
    "h": 244.878,
    "s": 78.344,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31369,
    "c": 0.18459,
    "h": 271.6
  },
  "luminance": 0.02527
}

Semantic roles & 50–950 ramp

primary

#1B118C

secondary

#B6C138

accent

#F533E5

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B118C

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

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