#1B185E#1B185E

#1B185E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.120 H 276.5°. Best body text is #FFFFFF at 15.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B185E
RGB	rgb(27, 24, 94)
HSL	hsl(243, 59%, 23%)
HSV	hsv(243, 74%, 37%)
CMYK	cmyk(71.3%, 74.5%, 0%, 63.1%)
CIE-LAB	lab(13.79, 25.97, -41.12)
CIE-LCH	lch(13.79, 48.63, 302.28°)
OKLab	oklab(26.78% 0.0136 -0.1187)
OKLCH	oklch(26.78% 0.12 276.5)
XYZ	xyz(2.7983, 1.6942, 10.7670)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B185E #5B5E18

analogous

#18385E #1B185E #3E185E

triadic

#1B185E #5E1B18 #185E1B

tetradic

#1B185E #5E1838 #5B5E18 #185E3E

square

#1B185E #5E1838 #5B5E18 #185E3E

split-complementary

#1B185E #5E3E18 #385E18

monochromatic

#070618 #0D0C2D #1B185E #29248F #3731C0

Accessibility & contrast

On white

15.69

#1B185E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1B185E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B185E

15.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B185E	#FFFFFF	#000000	##FFFFFF
##1B185E	1.00	15.69	1.34	15.69
#FFFFFF	15.69	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002660

Deuteranopia (green-blind)

#00205D

Tritanopia (blue-blind)

#002B39

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1b185e;
/* rgb */ color: rgb(27, 24, 94);
/* oklch */ color: oklch(26.8% 0.120 276.5);

Tailwind

colors: {
  custom: {
    50: '#62558c',
    500: '#1b185e',
    950: '#000000',
  },
}

SCSS

$custom: #1b185e;
$custom-light: #62558c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b185e",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 94
  },
  "hsl": {
    "h": 242.571,
    "s": 59.322,
    "l": 23.137
  },
  "oklch": {
    "l": 0.26781,
    "c": 0.11952,
    "h": 276.5
  },
  "luminance": 0.01694
}

Semantic roles & 50–950 ramp

primary

#1B185E

secondary

#91943D

accent

#E345DC

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1B185E

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

Preview Lab → · Contrast checker → · Palette generator →