#1833A0#1833A0

#1833A0 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.4% C 0.178 H 266.3°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1833A0
RGB	rgb(24, 51, 160)
HSL	hsl(228, 74%, 36%)
HSV	hsv(228, 85%, 63%)
CMYK	cmyk(85%, 68.1%, 0%, 37.3%)
CIE-LAB	lab(27.01, 32.83, -61.28)
CIE-LCH	lch(27.01, 69.52, 298.18°)
OKLab	oklab(38.37% -0.0114 -0.1776)
OKLCH	oklch(38.37% 0.178 266.3)
XYZ	xyz(7.9035, 5.0989, 33.8185)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1833A0 #A08518

analogous

#1877A0 #1833A0 #4118A0

triadic

#1833A0 #A01833 #33A018

tetradic

#1833A0 #A01877 #A08518 #18A041

square

#1833A0 #A01877 #A08518 #18A041

split-complementary

#1833A0 #A04118 #77A018

monochromatic

#081136 #10226B #1833A0 #2044D5 #4E6CE4

Accessibility & contrast

On white

10.40

#1833A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1833A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1833A0

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1833A0	#FFFFFF	#000000	##FFFFFF
##1833A0	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A3

Deuteranopia (green-blind)

#00399E

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1833a0;
/* rgb */ color: rgb(24, 51, 160);
/* oklch */ color: oklch(38.4% 0.178 266.3);

Tailwind

colors: {
  custom: {
    50: '#706abd',
    500: '#1833a0',
    950: '#000000',
  },
}

SCSS

$custom: #1833a0;
$custom-light: #706abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1833a0",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 160
  },
  "hsl": {
    "h": 228.088,
    "s": 73.913,
    "l": 36.078
  },
  "oklch": {
    "l": 0.38372,
    "c": 0.17797,
    "h": 266.3
  },
  "luminance": 0.051
}

Semantic roles & 50–950 ramp

primary

#1833A0

secondary

#C6AE4D

accent

#CC37F1

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1833A0

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

Preview Lab → · Contrast checker → · Palette generator →