#121A20
Closest named color: Rich Black (#0D1B2A). oklch(21.3% 0.017 241), rgb(18, 26, 32).
Aa
White text reads best on this color (17.58:1).
About this color
#121A20 is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.017. 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 17.58:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.58:1 |
Values
| HEX | #121A20 |
| RGB | rgb(18, 26, 32) |
| HSL | hsl(206, 28%, 10%) |
| OKLCH | oklch(21.3% 0.017 241) |
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 #121A20 | 17.58:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #121A20 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #121A20 text on white | 17.58:1 | AAA | Lc 104.4 | Preferred for body text |
| #121A20 text on black | 1.19:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DAE0
oklch(88.5% 0.011 243.7)
-
Step 300
300
#B6C3CC
oklch(81% 0.019 237.8)
-
Step 400
400
#90A4B3
oklch(70.8% 0.031 240.4)
-
Step 500
500
#748DA0
oklch(63.1% 0.04 241.1)
-
Step 600
600
#5C778B
oklch(55.6% 0.044 240.6)
-
Step 700
700
#4C6476
oklch(49.1% 0.041 241)
-
Step 800
800
#3E5260
oklch(42.8% 0.034 239.1)
-
Step 900
900
#35444F
oklch(37.8% 0.027 240.2)
-
Step 950
950 (this color)
#121A20
oklch(21.3% 0.017 241)
#121A20 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) | #171A20 | 0.009 |
| Deuteranopia (no green cones) | #161820 | 0.010 |
| Tritanopia (no blue cones) | #0E1B1C | 0.012 |
| Achromatopsia (no color) | #191919 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121A20
#121A20
oklch(21.3% 0.017 241)
- #1F1711
#1F1711
oklch(21.2% 0.017 58.5)
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 #121A20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.020
- Rich Navy #001219 ΔE 0.047
- Dark #1B2431 ΔE 0.047
- Jet #212529 ΔE 0.050
- Almost Black #070D0D ΔE 0.061
- Oxford Blue #1B263B ΔE 0.063
- Dark Brown #341C02 ΔE 0.082
- Navy Blue #001146 ΔE 0.087
Use #121A20 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.