#311F47
Closest named color: Space Cadet (#2B2D42). oklch(28.3% 0.073 302.8), rgb(49, 31, 71).
Aa
White text reads best on this color (14.81:1).
About this color
#311F47 is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.073 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.047 away. White text reads best on it, at 14.81:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.41:1 |
| White text | 14.81:1 |
Values
| HEX | #311F47 |
| RGB | rgb(49, 31, 71) |
| HSL | hsl(267, 39%, 20%) |
| OKLCH | oklch(28.3% 0.073 302.8) |
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 #311F47 | 14.81:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #311F47 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #311F47 text on white | 14.81:1 | AAA | Lc 101.5 | Preferred for body text |
| #311F47 text on black | 1.41:1 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F8
oklch(93.6% 0.025 303.5)
-
Step 200
200
#DFD2F4
oklch(88.5% 0.048 302.8)
-
Step 300
300
#CBB3EF
oklch(80.8% 0.087 302.8)
-
Step 400
400
#B28AE7
oklch(70.7% 0.138 302.9)
-
Step 500
500
#A069E0
oklch(63.1% 0.177 303)
-
Step 600
600
#8B4DCE
oklch(55.6% 0.193 302.7)
-
Step 700
700
#763DB2
oklch(49.1% 0.179 302.7)
-
Step 800
800
#603390
oklch(42.6% 0.148 302.8)
-
Step 900
900
#4E2E73
oklch(37.6% 0.116 302.6)
-
Step 950
950 (this color)
#311F47
oklch(28.3% 0.073 302.8)
#311F47 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) | #122748 | 0.053 |
| Deuteranopia (no green cones) | #172846 | 0.049 |
| Tritanopia (no blue cones) | #2D262F | 0.055 |
| Achromatopsia (no color) | #282828 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311F47
#311F47
oklch(28.3% 0.073 302.8)
- #232F00
#232F00
oklch(28.4% 0.07 123.5)
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 #311F47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.051
- Dark Purple #35063E ΔE 0.056
- Eggplant #380835 ΔE 0.059
- Eggplant Purple #430541 ΔE 0.061
- Aubergine #3D0734 ΔE 0.062
- Dark #1B2431 ΔE 0.062
- Gunmetal #293241 ΔE 0.064
Use #311F47 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.