#12203B#12203B

#12203B is a very dark, muted blue. Relative luminance 0.015; OKLCH L 24.7% C 0.055 H 262.4°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#12203B
RGB	rgb(18, 32, 59)
HSL	hsl(220, 53%, 15%)
HSV	hsv(220, 69%, 23%)
CMYK	cmyk(69.5%, 45.8%, 0%, 76.9%)
CIE-LAB	lab(12.46, 4.25, -19.24)
CIE-LCH	lch(12.46, 19.71, 282.45°)
OKLab	oklab(24.67% -0.0073 -0.0547)
OKLCH	oklch(24.67% 0.055 262.4)
XYZ	xyz(1.5551, 1.4773, 4.3400)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12203B #3B2D12

analogous

#12353B #12203B #18123B

triadic

#12203B #3B1220 #203B12

tetradic

#12203B #3B1235 #3B2D12 #123B18

square

#12203B #3B1235 #3B2D12 #123B18

split-complementary

#12203B #3B1812 #353B12

monochromatic

#070D17 #070D17 #12203B #20396A #2F5399

Accessibility & contrast

On white

16.21

#12203B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#12203B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12203B

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12203B	#FFFFFF	#000000	##FFFFFF
##12203B	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14223C

Deuteranopia (green-blind)

#0F1F3A

Tritanopia (blue-blind)

#00262A

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #12203b;
/* rgb */ color: rgb(18, 32, 59);
/* oklch */ color: oklch(24.7% 0.055 262.4);

Tailwind

colors: {
  custom: {
    50: '#545b71',
    500: '#12203b',
    950: '#000000',
  },
}

SCSS

$custom: #12203b;
$custom-light: #545b71;
$custom-dark: #000000;

JSON

{
  "hex": "#12203b",
  "rgb": {
    "r": 18,
    "g": 32,
    "b": 59
  },
  "hsl": {
    "h": 219.512,
    "s": 53.247,
    "l": 15.098
  },
  "oklch": {
    "l": 0.24672,
    "c": 0.05517,
    "h": 262.4
  },
  "luminance": 0.01477
}

Semantic roles & 50–950 ramp

primary

#12203B

secondary

#745E35

accent

#AB4BDD

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #12203B

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

Preview Lab → · Contrast checker → · Palette generator →