#181530
Closest named color: Rich Black (#0D1B2A). oklch(21.5% 0.052 286.3), rgb(24, 21, 48).
Aa
White text reads best on this color (17.66:1).
About this color
#181530 is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.052 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 17.66:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.66:1 |
Values
| HEX | #181530 |
| RGB | rgb(24, 21, 48) |
| HSL | hsl(247, 39%, 14%) |
| OKLCH | oklch(21.5% 0.052 286.3) |
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 #181530 | 17.66:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #181530 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #181530 text on white | 17.66:1 | AAA | Lc 104.4 | Preferred for body text |
| #181530 text on black | 1.18:1 | 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
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BDBBE7
oklch(80.8% 0.062 287)
-
Step 400
400
#9B97DB
oklch(70.6% 0.099 286.3)
-
Step 500
500
#847DD1
oklch(63.2% 0.124 286.1)
-
Step 600
600
#6E64BE
oklch(55.5% 0.136 286.2)
-
Step 700
700
#5D53A4
oklch(49.2% 0.126 286.5)
-
Step 800
800
#4B4485
oklch(42.6% 0.105 286)
-
Step 900
900
#3F3A6B
oklch(37.8% 0.082 286.4)
-
Step 950
950 (this color)
#181530
oklch(21.5% 0.052 286.3)
#181530 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) | #0B1931 | 0.023 |
| Deuteranopia (no green cones) | #0A182F | 0.024 |
| Tritanopia (no blue cones) | #111A20 | 0.042 |
| Achromatopsia (no color) | #191919 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181530
#181530
oklch(21.5% 0.052 286.3)
- #1C1B00
#1C1B00
oklch(21.6% 0.047 107.8)
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 #181530, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Dark #1B2431 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.058
- Navy Blue #001146 ΔE 0.059
- Midnight Purple #280137 ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.062
- Jet #212529 ΔE 0.065
- Rich Navy #001219 ΔE 0.066
Use #181530 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.