#2A1B33
Closest named color: Dark (#1B2431). oklch(25.3% 0.048 312), rgb(42, 27, 51).
Aa
White text reads best on this color (16.11:1).
About this color
#2A1B33 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.048 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.040 away. White text reads best on it, at 16.11:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.11:1 |
Values
| HEX | #2A1B33 |
| RGB | rgb(42, 27, 51) |
| HSL | hsl(278, 31%, 15%) |
| OKLCH | oklch(25.3% 0.048 312) |
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 #2A1B33 | 16.11:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #2A1B33 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #2A1B33 text on white | 16.11:1 | AAA | Lc 103.0 | Preferred for body text |
| #2A1B33 text on black | 1.30:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F2
oklch(93.7% 0.016 313.6)
-
Step 200
200
#E0D4E9
oklch(88.6% 0.031 311)
-
Step 300
300
#CDB7DC
oklch(81% 0.056 311.6)
-
Step 400
400
#B490CA
oklch(70.7% 0.092 312.3)
-
Step 500
500
#A174BD
oklch(63.2% 0.117 311.7)
-
Step 600
600
#8C5BA9
oklch(55.6% 0.128 311.8)
-
Step 700
700
#774A91
oklch(49.1% 0.119 312)
-
Step 800
800
#613D75
oklch(42.6% 0.098 312.5)
-
Step 900
900
#4F355F
oklch(37.8% 0.076 311.6)
-
Step 950
950 (this color)
#2A1B33
oklch(25.3% 0.048 312)
#2A1B33 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) | #162034 | 0.038 |
| Deuteranopia (no green cones) | #1A2132 | 0.034 |
| Tritanopia (no blue cones) | #291E24 | 0.033 |
| Achromatopsia (no color) | #212121 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A1B33
#2A1B33
oklch(25.3% 0.048 312)
- #19270D
#19270D
oklch(25.2% 0.049 132.4)
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 #2A1B33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.042
- Jet #212529 ΔE 0.046
- Eggplant #380835 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.056
- Dark Purple #35063E ΔE 0.058
- Aubergine #3D0734 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.058
Use #2A1B33 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.