#311F53
Closest named color: Space Cadet (#2B2D42). oklch(29.2% 0.091 296.3), rgb(49, 31, 83).
Aa
White text reads best on this color (14.46:1).
About this color
#311F53 is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.091 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.057 away. White text reads best on it, at 14.46:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.45:1 |
| White text | 14.46:1 |
Values
| HEX | #311F53 |
| RGB | rgb(49, 31, 83) |
| HSL | hsl(261, 46%, 22%) |
| OKLCH | oklch(29.2% 0.091 296.3) |
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 #311F53 | 14.46:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #311F53 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #311F53 text on white | 14.46:1 | AAA | Lc 101.0 | Preferred for body text |
| #311F53 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FD
oklch(93.6% 0.031 295.8)
-
Step 200
200
#DCD2FD
oklch(88.5% 0.059 295.8)
-
Step 300
300
#C7B2FF
oklch(80.9% 0.109 296.4)
-
Step 400
400
#AC86FE
oklch(70.7% 0.172 296.3)
-
Step 500
500
#9961FC
oklch(63% 0.22 296.1)
-
Step 600
600
#8640EB
oklch(55.6% 0.239 296.4)
-
Step 700
700
#722FCD
oklch(49.2% 0.223 296.3)
-
Step 800
800
#5C2AA5
oklch(42.7% 0.184 296.2)
-
Step 900
900
#4B2983
oklch(37.7% 0.143 296.2)
-
Step 950
950 (this color)
#311F53
oklch(29.2% 0.091 296.3)
#311F53 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) | #052A55 | 0.063 |
| Deuteranopia (no green cones) | #0B2952 | 0.059 |
| Tritanopia (no blue cones) | #292A35 | 0.072 |
| Achromatopsia (no color) | #292929 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311F53
#311F53
oklch(29.2% 0.091 296.3)
- #2A3000
#2A3000
oklch(29.3% 0.068 117)
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 #311F53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.057
- Dark Purple #35063E ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Eggplant Purple #430541 ΔE 0.067
- Marine #042E60 ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.068
- Deep Violet #490648 ΔE 0.068
Use #311F53 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.