#311B4B
Closest named color: Dark Purple (#35063E). oklch(27.8% 0.086 302.2), rgb(49, 27, 75).
Aa
White text reads best on this color (15.11:1).
About this color
#311B4B is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.086 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Purple (#35063E), ΔE 0.049 away. White text reads best on it, at 15.11:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Dark Purple (#35063E) |
| Black text | 1.38:1 |
| White text | 15.11:1 |
Values
| HEX | #311B4B |
| RGB | rgb(49, 27, 75) |
| HSL | hsl(267, 47%, 20%) |
| OKLCH | oklch(27.8% 0.086 302.2) |
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 #311B4B | 15.11:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #311B4B | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #311B4B text on white | 15.11:1 | AAA | Lc 101.8 | Preferred for body text |
| #311B4B text on black | 1.38:1 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#E0D1F9
oklch(88.5% 0.057 302.3)
-
Step 300
300
#CDB1F8
oklch(80.9% 0.102 302.2)
-
Step 400
400
#B584F4
oklch(70.7% 0.164 302.6)
-
Step 500
500
#A360F0
oklch(63.1% 0.209 302.2)
-
Step 600
600
#8F40DE
oklch(55.6% 0.227 302.3)
-
Step 700
700
#7A2FC1
oklch(49.1% 0.212 302.4)
-
Step 800
800
#632A9C
oklch(42.8% 0.175 302.3)
-
Step 900
900
#50287C
oklch(37.6% 0.137 302.1)
-
Step 950
950 (this color)
#311B4B
oklch(27.8% 0.086 302.2)
#311B4B 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) | #06264D | 0.067 |
| Deuteranopia (no green cones) | #0F264A | 0.060 |
| Tritanopia (no blue cones) | #2C2530 | 0.065 |
| Achromatopsia (no color) | #262626 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311B4B
#311B4B
oklch(27.8% 0.086 302.2)
- #232D00
#232D00
oklch(27.8% 0.067 121.8)
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 #311B4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Purple #35063E ΔE 0.049
- Deep Purple #36013F ΔE 0.056
- Eggplant #380835 ΔE 0.056
- Eggplant Purple #430541 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.060
- Aubergine #3D0734 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.061
Use #311B4B 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.