#1C185B#1C185B

#1C185B is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.115 H 277.8°. Best body text is #FFFFFF at 15.78:1 contrast (WCAG AA passes).

Color values

HEX	#1C185B
RGB	rgb(28, 24, 91)
HSL	hsl(244, 58%, 23%)
HSV	hsv(244, 74%, 36%)
CMYK	cmyk(69.2%, 73.6%, 0%, 64.3%)
CIE-LAB	lab(13.56, 25.01, -39.48)
CIE-LCH	lch(13.56, 46.74, 302.35°)
OKLab	oklab(26.54% 0.0155 -0.1139)
OKLCH	oklch(26.54% 0.115 277.8)
XYZ	xyz(2.6932, 1.6553, 10.0731)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C185B #575B18

analogous

#18365B #1C185B #3D185B

triadic

#1C185B #5B1C18 #185B1C

tetradic

#1C185B #5B1836 #575B18 #185B3D

square

#1C185B #5B1836 #575B18 #185B3D

split-complementary

#1C185B #5B3D18 #365B18

monochromatic

#070618 #0D0B2B #1C185B #2B258B #3A32BC

Accessibility & contrast

On white

15.78

#1C185B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#1C185B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C185B

15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C185B	#FFFFFF	#000000	##FFFFFF
##1C185B	1.00	15.78	1.33	15.78
#FFFFFF	15.78	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255D

Deuteranopia (green-blind)

#00205A

Tritanopia (blue-blind)

#002A37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1c185b;
/* rgb */ color: rgb(28, 24, 91);
/* oklch */ color: oklch(26.5% 0.115 277.8);

Tailwind

colors: {
  custom: {
    50: '#62558a',
    500: '#1c185b',
    950: '#000000',
  },
}

SCSS

$custom: #1c185b;
$custom-light: #62558a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c185b",
  "rgb": {
    "r": 28,
    "g": 24,
    "b": 91
  },
  "hsl": {
    "h": 243.582,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.26542,
    "c": 0.11498,
    "h": 277.8
  },
  "luminance": 0.01655
}

Semantic roles & 50–950 ramp

primary

#1C185B

secondary

#8D923D

accent

#E146D8

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1C185B

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

Preview Lab → · Contrast checker → · Palette generator →