#18122D
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.052 291.4), rgb(24, 18, 45).
Aa
White text reads best on this color (18.05:1).
About this color
#18122D is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.052 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.036 away. White text reads best on it, at 18.05:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.05:1 |
Values
| HEX | #18122D |
| RGB | rgb(24, 18, 45) |
| HSL | hsl(253, 43%, 12%) |
| OKLCH | oklch(20.6% 0.052 291.4) |
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 #18122D | 18.05:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #18122D | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #18122D text on white | 18.05:1 | AAA | Lc 104.7 | Preferred for body text |
| #18122D text on black | 1.16:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#D9D6EF
oklch(88.6% 0.034 291.2)
-
Step 300
300
#C0BAE6
oklch(80.8% 0.062 291.2)
-
Step 400
400
#A195DA
oklch(70.6% 0.1 291.6)
-
Step 500
500
#8B7ACF
oklch(63.1% 0.126 291.6)
-
Step 600
600
#7562BC
oklch(55.6% 0.136 291)
-
Step 700
700
#6350A2
oklch(49% 0.128 291.7)
-
Step 800
800
#504284
oklch(42.7% 0.107 290.9)
-
Step 900
900
#42386A
oklch(37.6% 0.084 291)
-
Step 950
950 (this color)
#18122D
oklch(20.6% 0.052 291.4)
#18122D 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) | #08172E | 0.029 |
| Deuteranopia (no green cones) | #08162C | 0.029 |
| Tritanopia (no blue cones) | #13171D | 0.042 |
| Achromatopsia (no color) | #161616 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18122D
#18122D
oklch(20.6% 0.052 291.4)
- #181900
#181900
oklch(20.5% 0.045 111.8)
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 #18122D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.036
- Midnight Purple #280137 ΔE 0.057
- Very Dark Purple #2A0134 ΔE 0.058
- Dark #1B2431 ΔE 0.062
- Navy Blue #001146 ΔE 0.062
- Rich Navy #001219 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.068
- Dark Navy #000435 ΔE 0.071
Use #18122D 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.