#2B2551
Closest named color: Space Cadet (#2B2D42). oklch(29.6% 0.077 286.9), rgb(43, 37, 81).
Aa
White text reads best on this color (14.13:1).
About this color
#2B2551 is a dark, moderately saturated purple. In OKLCH its lightness is 30%, its chroma 0.077 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.041 away. White text reads best on it, at 14.13:1.
| Hue family | Purples |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.48:1 |
| White text | 14.13:1 |
Values
| HEX | #2B2551 |
| RGB | rgb(43, 37, 81) |
| HSL | hsl(248, 37%, 23%) |
| OKLCH | oklch(29.6% 0.077 286.9) |
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 #2B2551 | 14.13:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #2B2551 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #2B2551 text on white | 14.13:1 | AAA | Lc 100.7 | Preferred for body text |
| #2B2551 text on black | 1.48:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5FA
oklch(88.6% 0.051 286.6)
-
Step 300
300
#BCB8F9
oklch(80.9% 0.091 287)
-
Step 400
400
#9B90F7
oklch(70.6% 0.148 286.9)
-
Step 500
500
#8571F3
oklch(63.1% 0.187 286.8)
-
Step 600
600
#7155E2
oklch(55.7% 0.204 286.9)
-
Step 700
700
#5F44C4
oklch(49.1% 0.189 286.9)
-
Step 800
800
#4D399E
oklch(42.7% 0.156 286.9)
-
Step 900
900
#40337E
oklch(37.8% 0.122 287)
-
Step 950
950 (this color)
#2B2551
oklch(29.6% 0.077 286.9)
#2B2551 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) | #132C53 | 0.037 |
| Deuteranopia (no green cones) | #122A50 | 0.037 |
| Tritanopia (no blue cones) | #202E37 | 0.064 |
| Achromatopsia (no color) | #2B2B2B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2551
#2B2551
oklch(29.6% 0.077 286.9)
- #312F00
#312F00
oklch(29.8% 0.064 107.2)
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 #2B2551, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.050
- Marine #042E60 ΔE 0.053
- Gunmetal #293241 ΔE 0.056
- Dark #1B2431 ΔE 0.067
- Midnight Blue #191970 ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.072
Use #2B2551 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.