#2A1B40
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.069 300.5), rgb(42, 27, 64).
Aa
White text reads best on this color (15.79:1).
About this color
#2A1B40 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.069 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.044 away. White text reads best on it, at 15.79:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.069) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.79:1 |
Values
| HEX | #2A1B40 |
| RGB | rgb(42, 27, 64) |
| HSL | hsl(264, 41%, 18%) |
| OKLCH | oklch(26.1% 0.069 300.5) |
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 #2A1B40 | 15.79:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #2A1B40 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #2A1B40 text on white | 15.79:1 | AAA | Lc 102.6 | Preferred for body text |
| #2A1B40 text on black | 1.32:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F3
oklch(88.5% 0.045 299.7)
-
Step 300
300
#C9B5EE
oklch(80.9% 0.082 300.6)
-
Step 400
400
#AE8DE5
oklch(70.8% 0.129 300.4)
-
Step 500
500
#9B6DDD
oklch(63.1% 0.166 300.7)
-
Step 600
600
#8652CB
oklch(55.6% 0.181 300.4)
-
Step 700
700
#7242AF
oklch(49.1% 0.167 300.6)
-
Step 800
800
#5C378E
oklch(42.6% 0.139 300.2)
-
Step 900
900
#4C3171
oklch(37.8% 0.107 300.9)
-
Step 950
950 (this color)
#2A1B40
oklch(26.1% 0.069 300.5)
#2A1B40 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) | #0E2241 | 0.048 |
| Deuteranopia (no green cones) | #12223F | 0.044 |
| Tritanopia (no blue cones) | #26222A | 0.053 |
| Achromatopsia (no color) | #232323 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A1B40
#2A1B40
oklch(26.1% 0.069 300.5)
- #202800
#202800
oklch(26% 0.062 120.5)
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 #2A1B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Dark Purple #35063E ΔE 0.050
- Dark #1B2431 ΔE 0.052
- Eggplant #380835 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.056
- Deep Purple #36013F ΔE 0.058
- Aubergine #3D0734 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.062
Use #2A1B40 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.