#2A2857
Closest named color: Prussian Blue (#1D3557). oklch(30.6% 0.082 282.3), rgb(42, 40, 87).
Aa
White text reads best on this color (13.64:1).
About this color
#2A2857 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.082 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.042 away. White text reads best on it, at 13.64:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.53:1 |
| White text | 13.64:1 |
Values
| HEX | #2A2857 |
| RGB | rgb(42, 40, 87) |
| HSL | hsl(243, 37%, 25%) |
| OKLCH | oklch(30.6% 0.082 282.3) |
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 #2A2857 | 13.64:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #2A2857 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #2A2857 text on white | 13.64:1 | AAA | Lc 100.0 | Preferred for body text |
| #2A2857 text on black | 1.53:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D3D5FD
oklch(88.4% 0.055 283)
-
Step 300
300
#B6B9FE
oklch(80.8% 0.097 282.1)
-
Step 400
400
#9392FE
oklch(70.8% 0.155 282.1)
-
Step 500
500
#7C72FC
oklch(63.2% 0.199 282.4)
-
Step 600
600
#6755EB
oklch(55.6% 0.216 282.2)
-
Step 700
700
#5744CD
oklch(49.2% 0.202 282.4)
-
Step 800
800
#4639A5
oklch(42.6% 0.166 282.2)
-
Step 900
900
#3A3383
oklch(37.7% 0.13 282.2)
-
Step 950
950 (this color)
#2A2857
oklch(30.6% 0.082 282.3)
#2A2857 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) | #132F59 | 0.034 |
| Deuteranopia (no green cones) | #102C56 | 0.035 |
| Tritanopia (no blue cones) | #1A323B | 0.071 |
| Achromatopsia (no color) | #2E2E2E | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A2857
#2A2857
oklch(30.6% 0.082 282.3)
- #363000
#363000
oklch(30.6% 0.064 101.9)
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 #2A2857, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.042
- Marine #042E60 ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Marine Blue #01386A ΔE 0.061
- Midnight Blue #191970 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.067
Use #2A2857 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.