#121B4A#121B4A

#121B4A is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.7% C 0.088 H 270.4°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#121B4A
RGB	rgb(18, 27, 74)
HSL	hsl(230, 61%, 18%)
HSV	hsv(230, 76%, 29%)
CMYK	cmyk(75.7%, 63.5%, 0%, 71%)
CIE-LAB	lab(12.00, 14.45, -30.48)
CIE-LCH	lch(12.00, 33.73, 295.36°)
OKLab	oklab(24.7% 0.0007 -0.0878)
OKLCH	oklch(24.7% 0.088 270.4)
XYZ	xyz(1.8770, 1.4067, 6.6498)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B4A #4A4112

analogous

#12374A #121B4A #25124A

triadic

#121B4A #4A121B #1B4A12

tetradic

#121B4A #4A1237 #4A4112 #124A25

square

#121B4A #4A1237 #4A4112 #124A25

split-complementary

#121B4A #4A2512 #374A12

monochromatic

#060919 #060919 #121B4A #1E2D7B #2A3FAC

Accessibility & contrast

On white

16.39

#121B4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#121B4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B4A

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B4A	#FFFFFF	#000000	##FFFFFF
##121B4A	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224C

Deuteranopia (green-blind)

#001D49

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121b4a;
/* rgb */ color: rgb(18, 27, 74);
/* oklch */ color: oklch(24.7% 0.088 270.4);

Tailwind

colors: {
  custom: {
    50: '#58577d',
    500: '#121b4a',
    950: '#000000',
  },
}

SCSS

$custom: #121b4a;
$custom-light: #58577d;
$custom-dark: #000000;

JSON

{
  "hex": "#121b4a",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 74
  },
  "hsl": {
    "h": 230.357,
    "s": 60.87,
    "l": 18.039
  },
  "oklch": {
    "l": 0.24695,
    "c": 0.08779,
    "h": 270.4
  },
  "luminance": 0.01407
}

Semantic roles & 50–950 ramp

primary

#121B4A

secondary

#837635

accent

#CA44E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #121B4A

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

Preview Lab → · Contrast checker → · Palette generator →