#121E24
Closest named color: Rich Black (#0D1B2A). oklch(22.7% 0.021 230.5), rgb(18, 30, 36).
Aa
White text reads best on this color (16.97:1).
About this color
#121E24 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.020 away. White text reads best on it, at 16.97:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #121E24 |
| RGB | rgb(18, 30, 36) |
| HSL | hsl(200, 33%, 11%) |
| OKLCH | oklch(22.7% 0.021 230.5) |
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 #121E24 | 16.97:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #121E24 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #121E24 text on white | 16.97:1 | AAA | Lc 103.9 | Preferred for body text |
| #121E24 text on black | 1.23:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#89A6B5
oklch(70.8% 0.039 230.5)
-
Step 500
500
#6B90A2
oklch(63.2% 0.049 229.4)
-
Step 600
600
#527A8D
oklch(55.7% 0.053 229.3)
-
Step 700
700
#426678
oklch(49% 0.05 230.8)
-
Step 800
800
#375362
oklch(42.6% 0.042 232.4)
-
Step 900
900
#304550
oklch(37.7% 0.032 231.5)
-
Step 950
950 (this color)
#121E24
oklch(22.7% 0.021 230.5)
#121E24 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) | #1B1E24 | 0.015 |
| Deuteranopia (no green cones) | #181B24 | 0.014 |
| Tritanopia (no blue cones) | #0B2020 | 0.016 |
| Achromatopsia (no color) | #1C1C1C | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121E24
#121E24
oklch(22.7% 0.021 230.5)
- #241913
#241913
oklch(22.5% 0.021 49.9)
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 #121E24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.020
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.051
- Rich Navy #001219 ΔE 0.059
- Almost Black #070D0D ΔE 0.075
- Dark Brown #341C02 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.083
Use #121E24 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.