#40355D
Closest named color: Prussian Blue (#1D3557). oklch(36% 0.069 295.4), rgb(64, 53, 93).
Aa
White text reads best on this color (11.13:1).
About this color
#40355D is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.069 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.055 away. White text reads best on it, at 11.13:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.069) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.88:1 |
| White text | 11.13:1 |
Values
| HEX | #40355D |
| RGB | rgb(64, 53, 93) |
| HSL | hsl(257, 27%, 29%) |
| OKLCH | oklch(36% 0.069 295.4) |
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 #40355D | 11.13:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #40355D | 1.88:1 | Fails | Lc 8.2 | Not readable |
| #40355D text on white | 11.13:1 | AAA | Lc 95.7 | Preferred for body text |
| #40355D text on black | 1.88:1 | 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
#F6F5FA
oklch(97.2% 0.007 295.5)
-
Step 100
100
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#DAD6EB
oklch(88.6% 0.029 294.5)
-
Step 300
300
#C3BBDF
oklch(81% 0.051 295.4)
-
Step 400
400
#A496CF
oklch(70.6% 0.083 295.5)
-
Step 500
500
#8F7CC2
oklch(63.2% 0.105 295.7)
-
Step 600
600
#7964AF
oklch(55.6% 0.115 295.3)
-
Step 700
700
#665396
oklch(49.2% 0.106 295.3)
-
Step 800
800
#53447A
oklch(42.7% 0.088 295.2)
-
Step 900
900 (this color)
#40355D
oklch(36% 0.069 295.4)
-
Step 950
950
#282239
oklch(27% 0.043 295.4)
#40355D 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) | #2A3C5F | 0.038 |
| Deuteranopia (no green cones) | #2B3B5C | 0.036 |
| Tritanopia (no blue cones) | #3A3C44 | 0.056 |
| Achromatopsia (no color) | #3B3B3B | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40355D
#40355D
oklch(36% 0.069 295.4)
- #3C4111
#3C4111
oklch(36% 0.069 115)
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 #40355D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.062
- Onyx #343A40 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.064
- Gunmetal #293241 ΔE 0.065
- Charcoal #264653 ΔE 0.069
- Charcoal Grey #3C4142 ΔE 0.069
Use #40355D 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.