#1C228D#1C228D

#1C228D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.171 H 270.4°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#1C228D
RGB	rgb(28, 34, 141)
HSL	hsl(237, 67%, 33%)
HSV	hsv(237, 80%, 55%)
CMYK	cmyk(80.1%, 75.9%, 0%, 44.7%)
CIE-LAB	lab(21.26, 36.90, -59.08)
CIE-LCH	lch(21.26, 69.66, 301.99°)
OKLab	oklab(33.67% 0.0013 -0.1711)
OKLCH	oklch(33.67% 0.171 270.4)
XYZ	xyz(5.8570, 3.3134, 25.5250)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C228D #8D871C

analogous

#1C5A8D #1C228D #4E1C8D

triadic

#1C228D #8D1C22 #228D1C

tetradic

#1C228D #8D1C5A #8D871C #1C8D4E

square

#1C228D #8D1C5A #8D871C #1C8D4E

split-complementary

#1C228D #8D4E1C #5A8D1C

monochromatic

#080927 #12165A #1C228D #262EC0 #4950DB

Accessibility & contrast

On white

12.63

#1C228D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1C228D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C228D

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C228D	#FFFFFF	#000000	##FFFFFF
##1C228D	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#002D8B

Tritanopia (blue-blind)

#004156

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c228d;
/* rgb */ color: rgb(28, 34, 141);
/* oklch */ color: oklch(33.7% 0.171 270.4);

Tailwind

colors: {
  custom: {
    50: '#6e5eb0',
    500: '#1c228d',
    950: '#000000',
  },
}

SCSS

$custom: #1c228d;
$custom-light: #6e5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c228d",
  "rgb": {
    "r": 28,
    "g": 34,
    "b": 141
  },
  "hsl": {
    "h": 236.814,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33669,
    "c": 0.17111,
    "h": 270.4
  },
  "luminance": 0.03314
}

Semantic roles & 50–950 ramp

primary

#1C228D

secondary

#BDB748

accent

#E13EEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #1C228D

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

Preview Lab → · Contrast checker → · Palette generator →