#1C228C#1C228C

#1C228C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.170 H 270.5°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C228C
RGB	rgb(28, 34, 140)
HSL	hsl(237, 67%, 33%)
HSV	hsv(237, 80%, 55%)
CMYK	cmyk(80%, 75.7%, 0%, 45.1%)
CIE-LAB	lab(21.15, 36.54, -58.64)
CIE-LCH	lch(21.15, 69.10, 301.93°)
OKLab	oklab(33.56% 0.0014 -0.1698)
OKLCH	oklch(33.56% 0.17 270.5)
XYZ	xyz(5.7829, 3.2837, 25.1349)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C228C #8C861C

analogous

#1C5A8C #1C228C #4E1C8C

triadic

#1C228C #8C1C22 #228C1C

tetradic

#1C228C #8C1C5A #8C861C #1C8C4E

square

#1C228C #8C1C5A #8C861C #1C8C4E

split-complementary

#1C228C #8C4E1C #5A8C1C

monochromatic

#080926 #121659 #1C228C #262EBF #4850DA

Accessibility & contrast

On white

12.68

#1C228C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1C228C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C228C

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C228C	#FFFFFF	#000000	##FFFFFF
##1C228C	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388F

Deuteranopia (green-blind)

#002D8A

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c228c;
/* rgb */ color: rgb(28, 34, 140);
/* oklch */ color: oklch(33.6% 0.170 270.5);

Tailwind

colors: {
  custom: {
    50: '#6e5eaf',
    500: '#1c228c',
    950: '#000000',
  },
}

SCSS

$custom: #1c228c;
$custom-light: #6e5eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c228c",
  "rgb": {
    "r": 28,
    "g": 34,
    "b": 140
  },
  "hsl": {
    "h": 236.786,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33556,
    "c": 0.16984,
    "h": 270.5
  },
  "luminance": 0.03284
}

Semantic roles & 50–950 ramp

primary

#1C228C

secondary

#BCB648

accent

#E03EEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C228C

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

Preview Lab → · Contrast checker → · Palette generator →