#311957
Closest named color: Dark Indigo (#1F0954). oklch(28.5% 0.106 296.9), rgb(49, 25, 87).
Aa
White text reads best on this color (14.92:1).
About this color
#311957 is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.106 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.053 away. White text reads best on it, at 14.92:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.40:1 |
| White text | 14.92:1 |
Values
| HEX | #311957 |
| RGB | rgb(49, 25, 87) |
| HSL | hsl(263, 55%, 22%) |
| OKLCH | oklch(28.5% 0.106 296.9) |
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 #311957 | 14.92:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #311957 | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #311957 text on white | 14.92:1 | AAA | Lc 101.4 | Preferred for body text |
| #311957 text on black | 1.40:1 | 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
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE6FF
oklch(93.7% 0.034 296.7)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C8B2FF
oklch(81% 0.109 297)
-
Step 400
400
#AD85FF
oklch(70.7% 0.175 296.8)
-
Step 500
500
#9B5EFF
oklch(63% 0.228 296.8)
-
Step 600
600
#8C25FE
oklch(55.6% 0.28 297)
-
Step 700
700
#770EDD
oklch(49.1% 0.26 296.9)
-
Step 800
800
#6116B3
oklch(42.8% 0.216 297.1)
-
Step 900
900
#4E1F8D
oklch(37.7% 0.168 296.9)
-
Step 950
950 (this color)
#311957
oklch(28.5% 0.106 296.9)
#311957 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) | #002759 | 0.071 |
| Deuteranopia (no green cones) | #002656 | 0.071 |
| Tritanopia (no blue cones) | #282735 | 0.081 |
| Achromatopsia (no color) | #272727 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311957
#311957
oklch(28.5% 0.106 296.9)
- #282E00
#282E00
oklch(28.5% 0.066 117.2)
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 #311957, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.053
- Dark Purple #35063E ΔE 0.059
- Deep Purple #36013F ΔE 0.063
- Midnight Blue #191970 ΔE 0.064
- Eggplant Purple #430541 ΔE 0.065
- Deep Violet #490648 ΔE 0.066
- Plum Purple #4E0550 ΔE 0.070
- Eggplant #380835 ΔE 0.071
Use #311957 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.