#18222D
Closest named color: Dark (#1B2431). oklch(24.8% 0.025 251.2), rgb(24, 34, 45).
Aa
White text reads best on this color (16.08:1).
About this color
#18222D is a very dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.011 away. White text reads best on it, at 16.08:1.
| Hue family | Neutrals |
| Lightness | very dark (25%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.08:1 |
Values
| HEX | #18222D |
| RGB | rgb(24, 34, 45) |
| HSL | hsl(211, 30%, 14%) |
| OKLCH | oklch(24.8% 0.025 251.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #18222D | 16.08:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #18222D | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #18222D text on white | 16.08:1 | AAA | Lc 103.0 | Preferred for body text |
| #18222D text on black | 1.30:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B3C2D4
oklch(80.8% 0.03 253)
-
Step 400
400
#8BA3BE
oklch(70.6% 0.048 251.5)
-
Step 500
500
#6E8CAE
oklch(63% 0.062 251.9)
-
Step 600
600
#56769A
oklch(55.6% 0.067 251.9)
-
Step 700
700
#466383
oklch(49.1% 0.062 251.5)
-
Step 800
800
#3A516B
oklch(42.7% 0.052 252.1)
-
Step 900
900
#324356
oklch(37.7% 0.039 251.6)
-
Step 950
950 (this color)
#18222D
oklch(24.8% 0.025 251.2)
#18222D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #1E222E | 0.010 |
| Deuteranopia (no green cones) | #1B202D | 0.008 |
| Tritanopia (no blue cones) | #112426 | 0.020 |
| Achromatopsia (no color) | #212121 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18222D
#18222D
oklch(24.8% 0.025 251.2)
- #291F13
#291F13
oklch(24.8% 0.026 71.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #18222D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.011
- Jet #212529 ΔE 0.022
- Oxford Blue #1B263B ΔE 0.028
- Rich Black #0D1B2A ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.061
- Gunmetal #293241 ΔE 0.068
- Dark Brown #341C02 ΔE 0.080
- Rich Navy #001219 ΔE 0.080
Use #18222D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.