#12103A#12103A

#12103A is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.7% C 0.078 H 279.2°. Best body text is #FFFFFF at 18.09:1 contrast (WCAG AA passes).

Color values

HEX	#12103A
RGB	rgb(18, 16, 58)
HSL	hsl(243, 57%, 15%)
HSV	hsv(243, 72%, 23%)
CMYK	cmyk(69%, 72.4%, 0%, 77.3%)
CIE-LAB	lab(7.27, 16.08, -26.89)
CIE-LCH	lch(7.27, 31.33, 300.87°)
OKLab	oklab(20.71% 0.0125 -0.0775)
OKLCH	oklch(20.71% 0.078 279.2)
XYZ	xyz(1.1982, 0.8046, 4.0943)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Dark Navy

#000435

ΔE00 3.67

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12103A #383A10

analogous

#10233A #12103A #27103A

triadic

#12103A #3A1210 #103A12

tetradic

#12103A #3A1023 #383A10 #103A27

square

#12103A #3A1023 #383A10 #103A27

split-complementary

#12103A #3A2710 #233A10

monochromatic

#070718 #070718 #12103A #211D6A #302A9A

Accessibility & contrast

On white

18.09

#12103A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#12103A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12103A

18.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12103A	#FFFFFF	#000000	##FFFFFF
##12103A	1.00	18.09	1.16	18.09
#FFFFFF	18.09	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183B

Deuteranopia (green-blind)

#001439

Tritanopia (blue-blind)

#001A23

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #12103a;
/* rgb */ color: rgb(18, 16, 58);
/* oklch */ color: oklch(20.7% 0.078 279.2);

Tailwind

colors: {
  custom: {
    50: '#554e71',
    500: '#12103a',
    950: '#000000',
  },
}

SCSS

$custom: #12103a;
$custom-light: #554e71;
$custom-dark: #000000;

JSON

{
  "hex": "#12103a",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 58
  },
  "hsl": {
    "h": 242.857,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.20707,
    "c": 0.07846,
    "h": 279.2
  },
  "luminance": 0.00805
}

Semantic roles & 50–950 ramp

primary

#12103A

secondary

#717432

accent

#E048D9

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #12103A

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

Preview Lab → · Contrast checker → · Palette generator →