#1C228F#1C228F

#1C228F is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.174 H 270.3°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#1C228F
RGB	rgb(28, 34, 143)
HSL	hsl(237, 67%, 34%)
HSV	hsv(237, 80%, 56%)
CMYK	cmyk(80.4%, 76.2%, 0%, 43.9%)
CIE-LAB	lab(21.48, 37.61, -59.96)
CIE-LCH	lch(21.48, 70.78, 302.10°)
OKLab	oklab(33.89% 0.0009 -0.1736)
OKLCH	oklch(33.89% 0.174 270.3)
XYZ	xyz(6.0072, 3.3734, 26.3158)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C228F #8F891C

analogous

#1C5B8F #1C228F #4F1C8F

triadic

#1C228F #8F1C22 #228F1C

tetradic

#1C228F #8F1C5B #8F891C #1C8F4F

square

#1C228F #8F1C5B #8F891C #1C8F4F

split-complementary

#1C228F #8F4F1C #5B8F1C

monochromatic

#080A29 #12165C #1C228F #262EC2 #4A51DC

Accessibility & contrast

On white

12.54

#1C228F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1C228F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C228F

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C228F	#FFFFFF	#000000	##FFFFFF
##1C228F	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#004257

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c228f;
/* rgb */ color: rgb(28, 34, 143);
/* oklch */ color: oklch(33.9% 0.174 270.3);

Tailwind

colors: {
  custom: {
    50: '#6e5eb1',
    500: '#1c228f',
    950: '#000000',
  },
}

SCSS

$custom: #1c228f;
$custom-light: #6e5eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c228f",
  "rgb": {
    "r": 28,
    "g": 34,
    "b": 143
  },
  "hsl": {
    "h": 236.87,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33894,
    "c": 0.17365,
    "h": 270.3
  },
  "luminance": 0.03374
}

Semantic roles & 50–950 ramp

primary

#1C228F

secondary

#BEB849

accent

#E13EEA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1C228F

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

Preview Lab → · Contrast checker → · Palette generator →