#311D59
Closest named color: Dark Indigo (#1F0954). oklch(29.3% 0.103 294.5), rgb(49, 29, 89).
Aa
White text reads best on this color (14.47:1).
About this color
#311D59 is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.103 and its hue 295°. 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 14.47:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.45:1 |
| White text | 14.47:1 |
Values
| HEX | #311D59 |
| RGB | rgb(49, 29, 89) |
| HSL | hsl(260, 51%, 23%) |
| OKLCH | oklch(29.3% 0.103 294.5) |
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 #311D59 | 14.47:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #311D59 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #311D59 text on white | 14.47:1 | AAA | Lc 101.0 | Preferred for body text |
| #311D59 text on black | 1.45:1 | 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
#EBE6FF
oklch(93.6% 0.034 294.9)
-
Step 200
200
#DBD2FF
oklch(88.5% 0.062 294.3)
-
Step 300
300
#C5B3FF
oklch(80.9% 0.107 294.8)
-
Step 400
400
#A987FF
oklch(70.7% 0.172 294.7)
-
Step 500
500
#9662FF
oklch(63.1% 0.222 294.4)
-
Step 600
600
#8630FD
oklch(55.7% 0.271 294.6)
-
Step 700
700
#721DDC
oklch(49.1% 0.252 294.6)
-
Step 800
800
#5C1EB2
oklch(42.7% 0.209 294.4)
-
Step 900
900
#4B238D
oklch(37.8% 0.163 294.5)
-
Step 950
950 (this color)
#311D59
oklch(29.3% 0.103 294.5)
#311D59 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) | #002A5B | 0.067 |
| Deuteranopia (no green cones) | #002858 | 0.067 |
| Tritanopia (no blue cones) | #262B38 | 0.081 |
| Achromatopsia (no color) | #292929 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311D59
#311D59
oklch(29.3% 0.103 294.5)
- #2C2F00
#2C2F00
oklch(29.2% 0.065 113.5)
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 #311D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.060
- Midnight Blue #191970 ΔE 0.062
- Dark Purple #35063E ΔE 0.067
- Marine #042E60 ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.068
- Deep Violet #490648 ΔE 0.070
- Eggplant Purple #430541 ΔE 0.070
- Deep Purple #36013F ΔE 0.072
Use #311D59 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.