#181123
Closest named color: Rich Black (#0D1B2A). oklch(19.6% 0.037 301), rgb(24, 17, 35).
Aa
White text reads best on this color (18.36:1).
About this color
#181123 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.037 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.037 away. White text reads best on it, at 18.36:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.36:1 |
Values
| HEX | #181123 |
| RGB | rgb(24, 17, 35) |
| HSL | hsl(263, 35%, 10%) |
| OKLCH | oklch(19.6% 0.037 301) |
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 #181123 | 18.36:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #181123 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #181123 text on white | 18.36:1 | AAA | Lc 105.0 | Preferred for body text |
| #181123 text on black | 1.14:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DBD6E7
oklch(88.5% 0.024 299.3)
-
Step 300
300
#C5BBD9
oklch(81% 0.043 300.6)
-
Step 400
400
#A897C6
oklch(70.8% 0.07 301.2)
-
Step 500
500
#927DB7
oklch(63.1% 0.088 300.5)
-
Step 600
600
#7D65A3
oklch(55.5% 0.097 301.1)
-
Step 700
700
#69548B
oklch(49% 0.089 300.8)
-
Step 800
800
#564571
oklch(42.7% 0.074 301.1)
-
Step 900
900
#473A5B
oklch(37.7% 0.057 301.8)
-
Step 950
950 (this color)
#181123
oklch(19.6% 0.037 301)
#181123 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) | #0C1424 | 0.023 |
| Deuteranopia (no green cones) | #0E1423 | 0.021 |
| Tritanopia (no blue cones) | #161418 | 0.028 |
| Achromatopsia (no color) | #141414 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181123
#181123
oklch(19.6% 0.037 301)
- #131804
#131804
oklch(19.8% 0.038 121)
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 #181123, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.037
- Rich Navy #001219 ΔE 0.051
- Almost Black #070D0D ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.066
- Dark #1B2431 ΔE 0.067
- Midnight Purple #280137 ΔE 0.067
- Jet #212529 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.078
Use #181123 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.