#311F4B
Closest named color: Space Cadet (#2B2D42). oklch(28.6% 0.079 300.3), rgb(49, 31, 75).
Aa
White text reads best on this color (14.70:1).
About this color
#311F4B is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.079 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.050 away. White text reads best on it, at 14.70:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.079) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.42:1 |
| White text | 14.70:1 |
Values
| HEX | #311F4B |
| RGB | rgb(49, 31, 75) |
| HSL | hsl(265, 42%, 21%) |
| OKLCH | oklch(28.6% 0.079 300.3) |
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 #311F4B | 14.70:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #311F4B | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #311F4B text on white | 14.70:1 | AAA | Lc 101.4 | Preferred for body text |
| #311F4B text on black | 1.42:1 | 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
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DED2F7
oklch(88.5% 0.052 300.1)
-
Step 300
300
#CAB3F5
oklch(80.9% 0.095 300.3)
-
Step 400
400
#B089EF
oklch(70.8% 0.149 300.3)
-
Step 500
500
#9E67EA
oklch(63.2% 0.192 300.4)
-
Step 600
600
#8949D8
oklch(55.6% 0.209 300.2)
-
Step 700
700
#7539BB
oklch(49.1% 0.194 300.5)
-
Step 800
800
#5F3097
oklch(42.6% 0.161 300.6)
-
Step 900
900
#4D2C79
oklch(37.6% 0.126 300.1)
-
Step 950
950 (this color)
#311F4B
oklch(28.6% 0.079 300.3)
#311F4B 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) | #0F284D | 0.056 |
| Deuteranopia (no green cones) | #14284A | 0.052 |
| Tritanopia (no blue cones) | #2C2731 | 0.060 |
| Achromatopsia (no color) | #282828 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311F4B
#311F4B
oklch(28.6% 0.079 300.3)
- #262F00
#262F00
oklch(28.6% 0.068 120.4)
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 #311F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.055
- Dark Purple #35063E ΔE 0.058
- Eggplant Purple #430541 ΔE 0.062
- Eggplant #380835 ΔE 0.063
- Deep Purple #36013F ΔE 0.065
- Deep Violet #490648 ΔE 0.066
- Aubergine #3D0734 ΔE 0.066
Use #311F4B 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.