#40375A
Closest named color: Dark Grey Blue (#29465B). oklch(36.2% 0.06 295), rgb(64, 55, 90).
Aa
White text reads best on this color (10.98:1).
About this color
#40375A is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.060 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.054 away. White text reads best on it, at 10.98:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.91:1 |
| White text | 10.98:1 |
Values
| HEX | #40375A |
| RGB | rgb(64, 55, 90) |
| HSL | hsl(255, 24%, 28%) |
| OKLCH | oklch(36.2% 0.06 295) |
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 #40375A | 10.98:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #40375A | 1.91:1 | Fails | Lc 8.5 | Not readable |
| #40375A text on white | 10.98:1 | AAA | Lc 95.4 | Preferred for body text |
| #40375A text on black | 1.91:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C2BBDB
oklch(80.8% 0.045 295.4)
-
Step 400
400
#A398C9
oklch(70.6% 0.072 294.8)
-
Step 500
500
#8D7EBC
oklch(63.1% 0.093 294.7)
-
Step 600
600
#7867A8
oklch(55.7% 0.1 295)
-
Step 700
700
#655590
oklch(49.1% 0.094 295.2)
-
Step 800
800
#524675
oklch(42.7% 0.077 294.7)
-
Step 900
900 (this color)
#40375A
oklch(36.2% 0.06 295)
-
Step 950
950
#282337
oklch(27.1% 0.037 295.3)
#40375A 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) | #2E3D5B | 0.032 |
| Deuteranopia (no green cones) | #2F3C59 | 0.030 |
| Tritanopia (no blue cones) | #3B3D44 | 0.049 |
| Achromatopsia (no color) | #3C3C3C | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40375A
#40375A
oklch(36.2% 0.06 295)
- #3D411A
#3D411A
oklch(36.2% 0.059 114.2)
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 #40375A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.054
- Onyx #343A40 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.060
- Gunmetal #293241 ΔE 0.061
- Charcoal #264653 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.063
Use #40375A 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.