#181028
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.048 297.2), rgb(24, 16, 40).
Aa
White text reads best on this color (18.36:1).
About this color
#181028 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.048 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 18.36:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.36:1 |
Values
| HEX | #181028 |
| RGB | rgb(24, 16, 40) |
| HSL | hsl(260, 43%, 11%) |
| OKLCH | oklch(19.7% 0.048 297.2) |
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 #181028 | 18.36:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #181028 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #181028 text on white | 18.36:1 | AAA | Lc 104.9 | Preferred for body text |
| #181028 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DBD5EC
oklch(88.5% 0.032 297.7)
-
Step 300
300
#C4BAE1
oklch(81% 0.055 296.9)
-
Step 400
400
#A695D2
oklch(70.7% 0.089 296.8)
-
Step 500
500
#917AC6
oklch(63.2% 0.114 296.9)
-
Step 600
600
#7C61B3
oklch(55.6% 0.126 297.3)
-
Step 700
700
#69509A
oklch(49.1% 0.117 297.5)
-
Step 800
800
#55427D
oklch(42.7% 0.097 297)
-
Step 900
900
#463864
oklch(37.6% 0.075 297.3)
-
Step 950
950 (this color)
#181028
oklch(19.7% 0.048 297.2)
#181028 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) | #081429 | 0.030 |
| Deuteranopia (no green cones) | #0A1427 | 0.028 |
| Tritanopia (no blue cones) | #15141A | 0.036 |
| Achromatopsia (no color) | #141414 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181028
#181028
oklch(19.7% 0.048 297.2)
- #141800
#141800
oklch(19.8% 0.046 117.6)
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 #181028, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Rich Navy #001219 ΔE 0.057
- Midnight Purple #280137 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.059
- Almost Black #070D0D ΔE 0.068
- Dark #1B2431 ΔE 0.068
- Navy Blue #001146 ΔE 0.070
- Dark Navy #000435 ΔE 0.072
Use #181028 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.