#2A1B45
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.076 297.4), rgb(42, 27, 69).
Aa
White text reads best on this color (15.65:1).
About this color
#2A1B45 is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.076 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.048 away. White text reads best on it, at 15.65:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.65:1 |
Values
| HEX | #2A1B45 |
| RGB | rgb(42, 27, 69) |
| HSL | hsl(261, 44%, 19%) |
| OKLCH | oklch(26.5% 0.076 297.4) |
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 #2A1B45 | 15.65:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #2A1B45 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #2A1B45 text on white | 15.65:1 | AAA | Lc 102.4 | Preferred for body text |
| #2A1B45 text on black | 1.34:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FA
oklch(93.7% 0.026 295.5)
-
Step 200
200
#DCD3F7
oklch(88.5% 0.05 296.8)
-
Step 300
300
#C7B5F4
oklch(81% 0.089 297.5)
-
Step 400
400
#AB8BEF
oklch(70.7% 0.145 297.3)
-
Step 500
500
#986AE9
oklch(63% 0.185 297.5)
-
Step 600
600
#844ED7
oklch(55.6% 0.2 297.6)
-
Step 700
700
#703EBB
oklch(49.2% 0.187 297.4)
-
Step 800
800
#5B3497
oklch(42.7% 0.155 297.6)
-
Step 900
900
#4A2F78
oklch(37.7% 0.12 297.4)
-
Step 950
950 (this color)
#2A1B45
oklch(26.5% 0.076 297.4)
#2A1B45 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) | #092346 | 0.052 |
| Deuteranopia (no green cones) | #0E2344 | 0.048 |
| Tritanopia (no blue cones) | #24232D | 0.058 |
| Achromatopsia (no color) | #232323 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A1B45
#2A1B45
oklch(26.5% 0.076 297.4)
- #232900
#232900
oklch(26.6% 0.062 117.9)
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 #2A1B45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.048
- Dark Purple #35063E ΔE 0.050
- Eggplant #380835 ΔE 0.056
- Dark Indigo #1F0954 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.058
- Deep Purple #36013F ΔE 0.058
- Dark #1B2431 ΔE 0.058
- Aubergine #3D0734 ΔE 0.063
Use #2A1B45 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.