#180310
Closest named color: Very Dark Brown (#1D0200). oklch(15% 0.048 343.9), rgb(24, 3, 16).
Aa
White text reads best on this color (19.82:1).
About this color
#180310 is a very dark, muted purple. In OKLCH its lightness is 15%, its chroma 0.048 and its hue 344°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.044 away. White text reads best on it, at 19.82:1.
| Hue family | Purples |
| Lightness | very dark (15%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.82:1 |
Values
| HEX | #180310 |
| RGB | rgb(24, 3, 16) |
| HSL | hsl(323, 78%, 5%) |
| OKLCH | oklch(15% 0.048 343.9) |
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 #180310 | 19.82:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #180310 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #180310 text on white | 19.82:1 | AAA | Lc 105.7 | Preferred for body text |
| #180310 text on black | 1.05:1 | 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
#F9F3F7
oklch(97% 0.008 337.4)
-
Step 100
100
#F2E6EC
oklch(93.6% 0.015 345.6)
-
Step 200
200
#E9D1DE
oklch(88.4% 0.032 343.9)
-
Step 300
300
#DCB3CA
oklch(81% 0.056 343.7)
-
Step 400
400
#C98AAF
oklch(70.7% 0.09 343.6)
-
Step 500
500
#BA6B9B
oklch(63.1% 0.117 343.7)
-
Step 600
600
#A55285
oklch(55.6% 0.126 344.2)
-
Step 700
700
#8D4271
oklch(49.1% 0.117 343.9)
-
Step 800
800
#73375C
oklch(42.8% 0.097 344.1)
-
Step 900
900
#5D304B
oklch(37.7% 0.075 344.4)
-
Step 950
950 (this color)
#180310
oklch(15% 0.048 343.9)
#180310 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) | #040710 | 0.053 |
| Deuteranopia (no green cones) | #0A0B0F | 0.045 |
| Tritanopia (no blue cones) | #1A0307 | 0.021 |
| Achromatopsia (no color) | #0A0A0A | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180310
#180310
oklch(15% 0.048 343.9)
- #000F08
#000F08
oklch(14.9% 0.031 165.8)
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 #180310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.044
- Almost Black #070D0D ΔE 0.057
- Rich Navy #001219 ΔE 0.072
- Very Dark Purple #2A0134 ΔE 0.084
- Midnight Purple #280137 ΔE 0.087
- Midnight #03012D ΔE 0.087
- Rich Black #0D1B2A ΔE 0.091
- Dark Navy Blue #00022E ΔE 0.094
Use #180310 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.