#311D45
Closest named color: Dark Purple (#35063E). oklch(27.8% 0.074 305.2), rgb(49, 29, 69).
Aa
White text reads best on this color (15.08:1).
About this color
#311D45 is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.074 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Purple (#35063E), ΔE 0.051 away. White text reads best on it, at 15.08:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.074) |
| Temperature | in between |
| Nearest name | Dark Purple (#35063E) |
| Black text | 1.39:1 |
| White text | 15.08:1 |
Values
| HEX | #311D45 |
| RGB | rgb(49, 29, 69) |
| HSL | hsl(270, 41%, 19%) |
| OKLCH | oklch(27.8% 0.074 305.2) |
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 #311D45 | 15.08:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #311D45 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #311D45 text on white | 15.08:1 | AAA | Lc 101.8 | Preferred for body text |
| #311D45 text on black | 1.39:1 | 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
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E0D2F4
oklch(88.6% 0.048 304.1)
-
Step 300
300
#CEB3EF
oklch(81% 0.088 305)
-
Step 400
400
#B588E6
oklch(70.6% 0.141 305.1)
-
Step 500
500
#A367DF
oklch(63.1% 0.18 304.9)
-
Step 600
600
#8F4ACC
oklch(55.5% 0.195 305.3)
-
Step 700
700
#7A3AB1
oklch(49.1% 0.182 305.3)
-
Step 800
800
#63318F
oklch(42.6% 0.151 305.3)
-
Step 900
900
#512D72
oklch(37.8% 0.117 305.6)
-
Step 950
950 (this color)
#311D45
oklch(27.8% 0.074 305.2)
#311D45 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) | #112646 | 0.056 |
| Deuteranopia (no green cones) | #162644 | 0.051 |
| Tritanopia (no blue cones) | #2E242D | 0.055 |
| Achromatopsia (no color) | #262626 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311D45
#311D45
oklch(27.8% 0.074 305.2)
- #202E00
#202E00
oklch(27.8% 0.07 125.6)
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 #311D45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Purple #35063E ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.052
- Eggplant #380835 ΔE 0.053
- Aubergine #3D0734 ΔE 0.057
- Eggplant Purple #430541 ΔE 0.058
- Deep Purple #36013F ΔE 0.059
- Dark #1B2431 ΔE 0.062
Use #311D45 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.