#12177E#12177E

#12177E is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.166 H 268.9°. Best body text is #FFFFFF at 14.49:1 contrast (WCAG AA passes).

Color values

HEX	#12177E
RGB	rgb(18, 23, 126)
HSL	hsl(237, 75%, 28%)
HSV	hsv(237, 86%, 49%)
CMYK	cmyk(85.7%, 81.7%, 0%, 50.6%)
CIE-LAB	lab(16.73, 37.35, -57.14)
CIE-LCH	lch(16.73, 68.26, 303.17°)
OKLab	oklab(29.82% -0.0031 -0.1655)
OKLCH	oklch(29.82% 0.166 268.9)
XYZ	xyz(4.3205, 2.2472, 19.9407)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12177E #7E7912

analogous

#124D7E #12177E #43127E

triadic

#12177E #7E1217 #177E12

tetradic

#12177E #7E124D #7E7912 #127E43

square

#12177E #7E124D #7E7912 #127E43

split-complementary

#12177E #7E4312 #4D7E12

monochromatic

#04051B #0A0D48 #12177E #1A21B4 #2A32E1

Accessibility & contrast

On white

14.49

#12177E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#12177E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12177E

14.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12177E	#FFFFFF	#000000	##FFFFFF
##12177E	1.00	14.49	1.45	14.49
#FFFFFF	14.49	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F81

Deuteranopia (green-blind)

#00247C

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #12177e;
/* rgb */ color: rgb(18, 23, 126);
/* oklch */ color: oklch(29.8% 0.166 268.9);

Tailwind

colors: {
  custom: {
    50: '#6856a5',
    500: '#12177e',
    950: '#000000',
  },
}

SCSS

$custom: #12177e;
$custom-light: #6856a5;
$custom-dark: #000000;

JSON

{
  "hex": "#12177e",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 126
  },
  "hsl": {
    "h": 237.222,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29816,
    "c": 0.16555,
    "h": 268.9
  },
  "luminance": 0.02248
}

Semantic roles & 50–950 ramp

primary

#12177E

secondary

#B4AE38

accent

#E936F2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #12177E

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

Preview Lab → · Contrast checker → · Palette generator →