#40315C
Closest named color: Prussian Blue (#1D3557). oklch(35.1% 0.075 298.6), rgb(64, 49, 92).
Aa
White text reads best on this color (11.59:1).
About this color
#40315C is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.075 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.056 away. White text reads best on it, at 11.59:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.81:1 |
| White text | 11.59:1 |
Values
| HEX | #40315C |
| RGB | rgb(64, 49, 92) |
| HSL | hsl(261, 30%, 28%) |
| OKLCH | oklch(35.1% 0.075 298.6) |
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 #40315C | 11.59:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #40315C | 1.81:1 | Fails | Lc 7.3 | Not readable |
| #40315C text on white | 11.59:1 | AAA | Lc 96.6 | Preferred for body text |
| #40315C text on black | 1.81:1 | 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 900.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD5EB
oklch(88.4% 0.031 298.2)
-
Step 300
300
#C5B9E1
oklch(80.9% 0.057 298.8)
-
Step 400
400
#A894D1
oklch(70.6% 0.09 299.1)
-
Step 500
500
#9379C5
oklch(63.1% 0.114 298.8)
-
Step 600
600
#7D61B2
oklch(55.6% 0.125 298.2)
-
Step 700
700
#6A5099
oklch(49.2% 0.116 298.5)
-
Step 800
800
#56427C
oklch(42.7% 0.095 298.2)
-
Step 900
900 (this color)
#40315C
oklch(35.1% 0.075 298.6)
-
Step 950
950
#29213A
oklch(26.9% 0.047 297.9)
#40315C 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) | #25395E | 0.046 |
| Deuteranopia (no green cones) | #28385B | 0.042 |
| Tritanopia (no blue cones) | #3A3942 | 0.059 |
| Achromatopsia (no color) | #393939 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40315C
#40315C
oklch(35.1% 0.075 298.6)
- #37400A
#37400A
oklch(35.2% 0.075 118.8)
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 #40315C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.061
- Gunmetal #293241 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.066
- Onyx #343A40 ΔE 0.067
- Dark Grey Blue #29465B ΔE 0.070
- Marine Blue #01386A ΔE 0.074
- Charcoal Grey #3C4142 ΔE 0.077
Use #40315C 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.