#12177F#12177F

#12177F is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.167 H 268.9°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#12177F
RGB	rgb(18, 23, 127)
HSL	hsl(237, 75%, 28%)
HSV	hsv(237, 86%, 50%)
CMYK	cmyk(85.8%, 81.9%, 0%, 50.2%)
CIE-LAB	lab(16.86, 37.69, -57.57)
CIE-LCH	lch(16.86, 68.81, 303.22°)
OKLab	oklab(29.94% -0.0033 -0.1668)
OKLCH	oklch(29.94% 0.167 268.9)
XYZ	xyz(4.3853, 2.2732, 20.2822)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12177F #7F7A12

analogous

#124D7F #12177F #43127F

triadic

#12177F #7F1217 #177F12

tetradic

#12177F #7F124D #7F7A12 #127F43

square

#12177F #7F124D #7F7A12 #127F43

split-complementary

#12177F #7F4312 #4D7F12

monochromatic

#04051B #0A0D49 #12177F #1A21B5 #2B33E1

Accessibility & contrast

On white

14.43

#12177F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#12177F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12177F

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12177F	#FFFFFF	#000000	##FFFFFF
##12177F	1.00	14.43	1.45	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F82

Deuteranopia (green-blind)

#00247D

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #12177f;
/* rgb */ color: rgb(18, 23, 127);
/* oklch */ color: oklch(29.9% 0.167 268.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#12177f",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 127
  },
  "hsl": {
    "h": 237.248,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.29941,
    "c": 0.16679,
    "h": 268.9
  },
  "luminance": 0.02274
}

Semantic roles & 50–950 ramp

primary

#12177F

secondary

#B5AF38

accent

#E936F2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #12177F

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

Preview Lab → · Contrast checker → · Palette generator →