#31255C
Closest named color: Prussian Blue (#1D3557). oklch(31% 0.094 289.8), rgb(49, 37, 92).
Aa
White text reads best on this color (13.55:1).
About this color
#31255C is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.094 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.055 away. White text reads best on it, at 13.55:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.54:1 |
| White text | 13.55:1 |
Values
| HEX | #31255C |
| RGB | rgb(49, 37, 92) |
| HSL | hsl(253, 43%, 25%) |
| OKLCH | oklch(31% 0.094 289.8) |
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 #31255C | 13.55:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #31255C | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #31255C text on white | 13.55:1 | AAA | Lc 99.8 | Preferred for body text |
| #31255C text on black | 1.54:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E7FF
oklch(93.7% 0.032 289.6)
-
Step 200
200
#D8D3FF
oklch(88.5% 0.06 290.3)
-
Step 300
300
#BFB6FF
oklch(81% 0.102 289.6)
-
Step 400
400
#A08CFF
oklch(70.8% 0.164 289.5)
-
Step 500
500
#8C68FF
oklch(63.1% 0.214 289.8)
-
Step 600
600
#7A42F6
oklch(55.6% 0.248 290.1)
-
Step 700
700
#6731D7
oklch(49.1% 0.232 289.8)
-
Step 800
800
#532BAD
oklch(42.6% 0.191 289.7)
-
Step 900
900
#442A89
oklch(37.6% 0.149 289.9)
-
Step 950
950 (this color)
#31255C
oklch(31% 0.094 289.8)
#31255C 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) | #072F5E | 0.055 |
| Deuteranopia (no green cones) | #092D5B | 0.054 |
| Tritanopia (no blue cones) | #24313C | 0.078 |
| Achromatopsia (no color) | #2E2E2E | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31255C
#31255C
oklch(31% 0.094 289.8)
- #333300
#333300
oklch(31.1% 0.068 109.8)
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 #31255C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.055
- Marine #042E60 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.058
- Midnight Blue #191970 ΔE 0.064
- Marine Blue #01386A ΔE 0.070
- Gunmetal #293241 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.073
- Dark Indigo #1F0954 ΔE 0.077
Use #31255C 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.