#181234
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.064 287.7), rgb(24, 18, 52).
Aa
White text reads best on this color (17.87:1).
About this color
#181234 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.064 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 17.87:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.87:1 |
Values
| HEX | #181234 |
| RGB | rgb(24, 18, 52) |
| HSL | hsl(251, 49%, 14%) |
| OKLCH | oklch(21.2% 0.064 287.7) |
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 #181234 | 17.87:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #181234 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #181234 text on white | 17.87:1 | AAA | Lc 104.5 | Preferred for body text |
| #181234 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BDBAF0
oklch(81% 0.076 287.1)
-
Step 400
400
#9D94E8
oklch(70.8% 0.121 287.8)
-
Step 500
500
#8677E1
oklch(63.1% 0.155 287.6)
-
Step 600
600
#715DCF
oklch(55.6% 0.169 287.7)
-
Step 700
700
#5F4CB3
oklch(49.1% 0.157 287.7)
-
Step 800
800
#4D3F91
oklch(42.7% 0.13 287.4)
-
Step 900
900
#403674
oklch(37.7% 0.102 287.9)
-
Step 950
950 (this color)
#181234
oklch(21.2% 0.064 287.7)
#181234 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) | #021835 | 0.036 |
| Deuteranopia (no green cones) | #021633 | 0.035 |
| Tritanopia (no blue cones) | #0F1920 | 0.053 |
| Achromatopsia (no color) | #171717 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181234
#181234
oklch(21.2% 0.064 287.7)
- #1B1A00
#1B1A00
oklch(21.2% 0.046 107.8)
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 #181234, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Navy Blue #001146 ΔE 0.052
- Midnight Purple #280137 ΔE 0.052
- Very Dark Purple #2A0134 ΔE 0.055
- Dark #1B2431 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Night Blue #040348 ΔE 0.067
Use #181234 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.