#2B1855
Closest named color: Dark Indigo (#1F0954). oklch(27.4% 0.105 292.4), rgb(43, 24, 85).
Aa
White text reads best on this color (15.38:1).
About this color
#2B1855 is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.105 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.041 away. White text reads best on it, at 15.38:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.36:1 |
| White text | 15.38:1 |
Values
| HEX | #2B1855 |
| RGB | rgb(43, 24, 85) |
| HSL | hsl(259, 56%, 21%) |
| OKLCH | oklch(27.4% 0.105 292.4) |
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 #2B1855 | 15.38:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #2B1855 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #2B1855 text on white | 15.38:1 | AAA | Lc 102.0 | Preferred for body text |
| #2B1855 text on black | 1.36:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#EAE6FF
oklch(93.6% 0.034 293.1)
-
Step 200
200
#DAD2FF
oklch(88.5% 0.062 293.2)
-
Step 300
300
#C2B4FF
oklch(80.9% 0.105 292.4)
-
Step 400
400
#A589FF
oklch(70.7% 0.169 292.5)
-
Step 500
500
#9265FF
oklch(63.2% 0.218 292.5)
-
Step 600
600
#8133FF
oklch(55.6% 0.271 292.4)
-
Step 700
700
#6E1DE0
oklch(49% 0.255 292.4)
-
Step 800
800
#591EB5
oklch(42.6% 0.212 292.3)
-
Step 900
900
#49238F
oklch(37.7% 0.165 292.8)
-
Step 950
950 (this color)
#2B1855
oklch(27.4% 0.105 292.4)
#2B1855 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) | #002657 | 0.062 |
| Deuteranopia (no green cones) | #002354 | 0.061 |
| Tritanopia (no blue cones) | #1F2734 | 0.083 |
| Achromatopsia (no color) | #252525 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B1855
#2B1855
oklch(27.4% 0.105 292.4)
- #282A00
#282A00
oklch(27.4% 0.061 112.5)
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 #2B1855, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.041
- Dark Purple #35063E ΔE 0.059
- Midnight Blue #191970 ΔE 0.059
- Deep Purple #36013F ΔE 0.064
- Eggplant Purple #430541 ΔE 0.071
- Oxford Blue #1B263B ΔE 0.071
- Marine #042E60 ΔE 0.072
- Eggplant #380835 ΔE 0.072
Use #2B1855 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.