#1828A1#1828A1

#1828A1 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.191 H 267.7°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1828A1
RGB	rgb(24, 40, 161)
HSL	hsl(233, 74%, 36%)
HSV	hsv(233, 85%, 63%)
CMYK	cmyk(85.1%, 75.2%, 0%, 36.9%)
CIE-LAB	lab(24.59, 40.14, -65.89)
CIE-LCH	lch(24.59, 77.15, 301.35°)
OKLab	oklab(36.65% -0.0075 -0.191)
OKLCH	oklch(36.65% 0.191 267.7)
XYZ	xyz(7.5663, 4.2841, 34.1394)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1828A1 #A19118

analogous

#186DA1 #1828A1 #4D18A1

triadic

#1828A1 #A11828 #28A118

tetradic

#1828A1 #A1186D #A19118 #18A14D

square

#1828A1 #A1186D #A19118 #18A14D

split-complementary

#1828A1 #A14D18 #6DA118

monochromatic

#080E36 #101B6C #1828A1 #2035D6 #4F60E5

Accessibility & contrast

On white

11.31

#1828A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1828A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1828A1

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1828A1	#FFFFFF	#000000	##FFFFFF
##1828A1	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A5

Deuteranopia (green-blind)

#00349F

Tritanopia (blue-blind)

#004C62

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1828a1;
/* rgb */ color: rgb(24, 40, 161);
/* oklch */ color: oklch(36.7% 0.191 267.7);

Tailwind

colors: {
  custom: {
    50: '#7263be',
    500: '#1828a1',
    950: '#000000',
  },
}

SCSS

$custom: #1828a1;
$custom-light: #7263be;
$custom-dark: #000000;

JSON

{
  "hex": "#1828a1",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 161
  },
  "hsl": {
    "h": 232.993,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36651,
    "c": 0.19115,
    "h": 267.7
  },
  "luminance": 0.04285
}

Semantic roles & 50–950 ramp

primary

#1828A1

secondary

#C7B94E

accent

#DB37F1

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1828A1

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

Preview Lab → · Contrast checker → · Palette generator →