#311D54
Closest named color: Dark Indigo (#1F0954). oklch(28.9% 0.096 296.7), rgb(49, 29, 84).
Aa
White text reads best on this color (14.64:1).
About this color
#311D54 is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.096 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 0.060 away. White text reads best on it, at 14.64:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.43:1 |
| White text | 14.64:1 |
Values
| HEX | #311D54 |
| RGB | rgb(49, 29, 84) |
| HSL | hsl(262, 49%, 22%) |
| OKLCH | oklch(28.9% 0.096 296.7) |
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 #311D54 | 14.64:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #311D54 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #311D54 text on white | 14.64:1 | AAA | Lc 101.2 | Preferred for body text |
| #311D54 text on black | 1.43:1 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#ECE6FE
oklch(93.7% 0.033 297.2)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C7B2FF
oklch(80.9% 0.109 296.4)
-
Step 400
400
#AD85FF
oklch(70.7% 0.175 296.8)
-
Step 500
500
#9B5EFF
oklch(63% 0.228 296.8)
-
Step 600
600
#8839F1
oklch(55.6% 0.252 296.6)
-
Step 700
700
#7428D2
oklch(49.2% 0.235 296.7)
-
Step 800
800
#5E25A9
oklch(42.7% 0.194 296.8)
-
Step 900
900
#4C2686
oklch(37.7% 0.151 296.5)
-
Step 950
950 (this color)
#311D54
oklch(28.9% 0.096 296.7)
#311D54 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) | #002956 | 0.068 |
| Deuteranopia (no green cones) | #052853 | 0.065 |
| Tritanopia (no blue cones) | #292935 | 0.075 |
| Achromatopsia (no color) | #292929 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311D54
#311D54
oklch(28.9% 0.096 296.7)
- #292F00
#292F00
oklch(28.9% 0.067 117.1)
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 #311D54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.060
- Dark Purple #35063E ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.063
- Eggplant Purple #430541 ΔE 0.065
- Deep Violet #490648 ΔE 0.066
- Deep Purple #36013F ΔE 0.067
- Oxford Blue #1B263B ΔE 0.068
- Midnight Blue #191970 ΔE 0.068
Use #311D54 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.