#181527
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.035 290.7), rgb(24, 21, 39).
Aa
White text reads best on this color (17.86:1).
About this color
#181527 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.035 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 0.025 away. White text reads best on it, at 17.86:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.86:1 |
Values
| HEX | #181527 |
| RGB | rgb(24, 21, 39) |
| HSL | hsl(250, 30%, 12%) |
| OKLCH | oklch(20.9% 0.035 290.7) |
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 #181527 | 17.86:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #181527 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #181527 text on white | 17.86:1 | AAA | Lc 104.6 | Preferred for body text |
| #181527 text on black | 1.17:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D9D7E8
oklch(88.6% 0.023 291.3)
-
Step 300
300
#C0BCDA
oklch(80.8% 0.042 291.5)
-
Step 400
400
#A09AC8
oklch(70.8% 0.067 290.6)
-
Step 500
500
#8980BA
oklch(63% 0.087 290.8)
-
Step 600
600
#7369A6
oklch(55.6% 0.094 290.5)
-
Step 700
700
#61578E
oklch(49% 0.087 291.2)
-
Step 800
800
#4F4873
oklch(42.8% 0.07 290.6)
-
Step 900
900
#413C5D
oklch(37.6% 0.056 290.4)
-
Step 950
950 (this color)
#181527
oklch(20.9% 0.035 290.7)
#181527 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) | #101828 | 0.016 |
| Deuteranopia (no green cones) | #101727 | 0.015 |
| Tritanopia (no blue cones) | #15181C | 0.028 |
| Achromatopsia (no color) | #171717 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181527
#181527
oklch(20.9% 0.035 290.7)
- #191905
#191905
oklch(20.8% 0.035 109.1)
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 #181527, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Dark #1B2431 ΔE 0.053
- Rich Navy #001219 ΔE 0.055
- Jet #212529 ΔE 0.061
- Oxford Blue #1B263B ΔE 0.063
- Almost Black #070D0D ΔE 0.068
- Very Dark Purple #2A0134 ΔE 0.070
- Midnight Purple #280137 ΔE 0.070
Use #181527 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.