#18122C
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.05 292), rgb(24, 18, 44).
Aa
White text reads best on this color (18.07:1).
About this color
#18122C is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.050 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.07:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #18122C |
| RGB | rgb(24, 18, 44) |
| HSL | hsl(254, 42%, 12%) |
| OKLCH | oklch(20.5% 0.05 292) |
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 #18122C | 18.07:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #18122C | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #18122C text on white | 18.07:1 | AAA | Lc 104.7 | Preferred for body text |
| #18122C 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
#D9D6EE
oklch(88.6% 0.033 291.5)
-
Step 300
300
#C1BAE5
oklch(80.9% 0.06 292.5)
-
Step 400
400
#A196D8
oklch(70.7% 0.096 291.4)
-
Step 500
500
#8B7ACD
oklch(63% 0.123 291.9)
-
Step 600
600
#7662BA
oklch(55.6% 0.133 291.9)
-
Step 700
700
#6351A0
oklch(49.1% 0.123 291.7)
-
Step 800
800
#514382
oklch(42.8% 0.102 291.7)
-
Step 900
900
#433968
oklch(37.8% 0.079 292)
-
Step 950
950 (this color)
#18122C
oklch(20.5% 0.05 292)
#18122C 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) | #09172D | 0.028 |
| Deuteranopia (no green cones) | #09162B | 0.028 |
| Tritanopia (no blue cones) | #13171C | 0.042 |
| Achromatopsia (no color) | #161616 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18122C
#18122C
oklch(20.5% 0.05 292)
- #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 #18122C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Midnight Purple #280137 ΔE 0.057
- Very Dark Purple #2A0134 ΔE 0.059
- Rich Navy #001219 ΔE 0.061
- Dark #1B2431 ΔE 0.062
- Navy Blue #001146 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.069
- Jet #212529 ΔE 0.072
Use #18122C 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.