#40172B
Closest named color: Aubergine (#3D0734). oklch(27.5% 0.069 352.1), rgb(64, 23, 43).
Aa
White text reads best on this color (15.26:1).
About this color
#40172B is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.069 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Aubergine (#3D0734), ΔE 0.043 away. White text reads best on it, at 15.26:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.069) |
| Temperature | warm |
| Nearest name | Aubergine (#3D0734) |
| Black text | 1.37:1 |
| White text | 15.26:1 |
Values
| HEX | #40172B |
| RGB | rgb(64, 23, 43) |
| HSL | hsl(331, 47%, 17%) |
| OKLCH | oklch(27.5% 0.069 352.1) |
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 #40172B | 15.26:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #40172B | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #40172B text on white | 15.26:1 | AAA | Lc 101.9 | Preferred for body text |
| #40172B text on black | 1.37:1 | 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
#FCF3F6
oklch(97.2% 0.01 354.9)
-
Step 100
100
#F7E4EB
oklch(93.6% 0.023 353.2)
-
Step 200
200
#F2CDDC
oklch(88.4% 0.046 351.7)
-
Step 300
300
#EBABC6
oklch(80.9% 0.082 352.1)
-
Step 400
400
#DE7CA9
oklch(70.7% 0.132 352)
-
Step 500
500
#D25794
oklch(63.2% 0.168 352.1)
-
Step 600
600
#BD377E
oklch(55.6% 0.182 352.2)
-
Step 700
700
#A2286A
oklch(49% 0.169 352.2)
-
Step 800
800
#842457
oklch(42.8% 0.14 352)
-
Step 900
900
#6A2347
oklch(37.6% 0.109 352.2)
-
Step 950
950 (this color)
#40172B
oklch(27.5% 0.069 352.1)
#40172B 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) | #1C212C | 0.076 |
| Deuteranopia (no green cones) | #27282A | 0.069 |
| Tritanopia (no blue cones) | #45151F | 0.024 |
| Achromatopsia (no color) | #252525 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40172B
#40172B
oklch(27.5% 0.069 352.1)
- #003025
#003025
oklch(27.6% 0.053 172.6)
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 #40172B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aubergine #3D0734 ΔE 0.043
- Dark Plum #3F012C ΔE 0.046
- Eggplant #380835 ΔE 0.049
- Eggplant Purple #430541 ΔE 0.058
- Dark Purple #35063E ΔE 0.066
- Dark Maroon #3C0008 ΔE 0.066
- Deep Violet #490648 ΔE 0.067
- Mahogany #4A0100 ΔE 0.067
Use #40172B 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.