#2B1B40
Closest named color: Oxford Blue (#1B263B). oklch(26.3% 0.069 301.8), rgb(43, 27, 64).
Aa
White text reads best on this color (15.74:1).
About this color
#2B1B40 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.069 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 15.74:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.069) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.74:1 |
Values
| HEX | #2B1B40 |
| RGB | rgb(43, 27, 64) |
| HSL | hsl(266, 41%, 18%) |
| OKLCH | oklch(26.3% 0.069 301.8) |
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 #2B1B40 | 15.74:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #2B1B40 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #2B1B40 text on white | 15.74:1 | AAA | Lc 102.6 | Preferred for body text |
| #2B1B40 text on black | 1.33:1 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#ECE6F7
oklch(93.5% 0.024 301.9)
-
Step 200
200
#DED3F3
oklch(88.6% 0.045 301.1)
-
Step 300
300
#CAB5ED
oklch(81% 0.081 301.8)
-
Step 400
400
#B08CE4
oklch(70.8% 0.13 302)
-
Step 500
500
#9D6CDC
oklch(63.1% 0.167 302)
-
Step 600
600
#8851CA
oklch(55.6% 0.182 301.7)
-
Step 700
700
#7441AE
oklch(49.1% 0.168 302.1)
-
Step 800
800
#5E368D
oklch(42.6% 0.14 302)
-
Step 900
900
#4D3071
oklch(37.7% 0.109 302)
-
Step 950
950 (this color)
#2B1B40
oklch(26.3% 0.069 301.8)
#2B1B40 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) | #0F2341 | 0.049 |
| Deuteranopia (no green cones) | #13233F | 0.046 |
| Tritanopia (no blue cones) | #27222A | 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°).
- #2B1B40
#2B1B40
oklch(26.3% 0.069 301.8)
- #202900
#202900
oklch(26.3% 0.063 121.5)
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 #2B1B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.045
- Dark Purple #35063E ΔE 0.049
- Eggplant #380835 ΔE 0.051
- Dark #1B2431 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.056
- Deep Purple #36013F ΔE 0.057
- Aubergine #3D0734 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.063
Use #2B1B40 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.