#1B185D#1B185D

#1B185D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.118 H 276.7°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B185D
RGB	rgb(27, 24, 93)
HSL	hsl(243, 59%, 23%)
HSV	hsv(243, 74%, 36%)
CMYK	cmyk(71%, 74.2%, 0%, 63.5%)
CIE-LAB	lab(13.69, 25.60, -40.62)
CIE-LCH	lch(13.69, 48.02, 302.22°)
OKLab	oklab(26.67% 0.0138 -0.1173)
OKLCH	oklch(26.67% 0.118 276.7)
XYZ	xyz(2.7538, 1.6764, 10.5323)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B185D #5A5D18

analogous

#18375D #1B185D #3D185D

triadic

#1B185D #5D1B18 #185D1B

tetradic

#1B185D #5D1837 #5A5D18 #185D3D

square

#1B185D #5D1837 #5A5D18 #185D3D

split-complementary

#1B185D #5D3D18 #375D18

monochromatic

#070618 #0D0B2C #1B185D #29258E #3731BE

Accessibility & contrast

On white

15.73

#1B185D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1B185D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B185D

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B185D	#FFFFFF	#000000	##FFFFFF
##1B185D	1.00	15.73	1.34	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002B38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1b185d;
/* rgb */ color: rgb(27, 24, 93);
/* oklch */ color: oklch(26.7% 0.118 276.7);

Tailwind

colors: {
  custom: {
    50: '#62558c',
    500: '#1b185d',
    950: '#000000',
  },
}

SCSS

$custom: #1b185d;
$custom-light: #62558c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b185d",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 93
  },
  "hsl": {
    "h": 242.609,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.26674,
    "c": 0.11809,
    "h": 276.7
  },
  "luminance": 0.01677
}

Semantic roles & 50–950 ramp

primary

#1B185D

secondary

#90933D

accent

#E246DB

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1B185D

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

Preview Lab → · Contrast checker → · Palette generator →