#12178F#12178F

#12178F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.186 H 268.1°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#12178F
RGB	rgb(18, 23, 143)
HSL	hsl(238, 78%, 32%)
HSV	hsv(238, 87%, 56%)
CMYK	cmyk(87.4%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(18.90, 43.10, -64.25)
CIE-LCH	lch(18.90, 77.36, 303.85°)
OKLab	oklab(31.95% -0.0063 -0.1861)
OKLCH	oklch(31.95% 0.186 268.1)
XYZ	xyz(5.5121, 2.7239, 26.2165)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12178F #8F8A12

analogous

#12568F #12178F #4C128F

triadic

#12178F #8F1217 #178F12

tetradic

#12178F #8F1256 #8F8A12 #128F4C

square

#12178F #8F1256 #8F8A12 #128F4C

split-complementary

#12178F #8F4C12 #568F12

monochromatic

#040622 #0B0E59 #12178F #1920C5 #363DE6

Accessibility & contrast

On white

13.59

#12178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#12178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12178F

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12178F	#FFFFFF	#000000	##FFFFFF
##12178F	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003492

Deuteranopia (green-blind)

#00278D

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #12178f;
/* rgb */ color: rgb(18, 23, 143);
/* oklch */ color: oklch(32.0% 0.186 268.1);

Tailwind

colors: {
  custom: {
    50: '#6d57b1',
    500: '#12178f',
    950: '#000000',
  },
}

SCSS

$custom: #12178f;
$custom-light: #6d57b1;
$custom-dark: #000000;

JSON

{
  "hex": "#12178f",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 237.6,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31951,
    "c": 0.18619,
    "h": 268.1
  },
  "luminance": 0.02725
}

Semantic roles & 50–950 ramp

primary

#12178F

secondary

#C3BE3A

accent

#EC34F4

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #12178F

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

Preview Lab → · Contrast checker → · Palette generator →