#12128F#12128F

#12128F is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.4% C 0.190 H 268.3°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#12128F
RGB	rgb(18, 18, 143)
HSL	hsl(240, 78%, 32%)
HSV	hsv(240, 87%, 56%)
CMYK	cmyk(87.4%, 87.4%, 0%, 43.9%)
CIE-LAB	lab(18.12, 45.43, -65.56)
CIE-LCH	lch(18.12, 79.76, 304.72°)
OKLab	oklab(31.41% -0.0057 -0.1897)
OKLCH	oklch(31.41% 0.19 268.3)
XYZ	xyz(5.4220, 2.5437, 26.1865)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12128F #8F8F12

analogous

#12518F #12128F #51128F

triadic

#12128F #8F1212 #128F12

tetradic

#12128F #8F1251 #8F8F12 #128F51

square

#12128F #8F1251 #8F8F12 #128F51

split-complementary

#12128F #8F5112 #518F12

monochromatic

#040422 #0B0B59 #12128F #1919C5 #3636E6

Accessibility & contrast

On white

13.92

#12128F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#12128F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12128F

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12128F	#FFFFFF	#000000	##FFFFFF
##12128F	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003392

Deuteranopia (green-blind)

#00258D

Tritanopia (blue-blind)

#003C54

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #12128f;
/* rgb */ color: rgb(18, 18, 143);
/* oklch */ color: oklch(31.4% 0.190 268.3);

Tailwind

colors: {
  custom: {
    50: '#6d55b1',
    500: '#12128f',
    950: '#000000',
  },
}

SCSS

$custom: #12128f;
$custom-light: #6d55b1;
$custom-dark: #000000;

JSON

{
  "hex": "#12128f",
  "rgb": {
    "r": 18,
    "g": 18,
    "b": 143
  },
  "hsl": {
    "h": 240,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31407,
    "c": 0.18984,
    "h": 268.3
  },
  "luminance": 0.02544
}

Semantic roles & 50–950 ramp

primary

#12128F

secondary

#C3C33A

accent

#F434F4

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #12128F

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

Preview Lab → · Contrast checker → · Palette generator →