#403874
Closest named color: Dark Slate Blue (#483D8B). oklch(38.1% 0.099 286.8), rgb(64, 56, 116).
Aa
White text reads best on this color (10.31:1).
About this color
#403874 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.099 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 10.31:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.03:1 |
| White text | 10.31:1 |
Values
| HEX | #403874 |
| RGB | rgb(64, 56, 116) |
| HSL | hsl(248, 35%, 34%) |
| OKLCH | oklch(38.1% 0.099 286.8) |
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 #403874 | 10.31:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #403874 | 2.03:1 | Fails | Lc 10.1 | Not readable |
| #403874 text on white | 10.31:1 | AAA | Lc 93.8 | Preferred for body text |
| #403874 text on black | 2.03:1 | Fails | Lc -8.8 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BCBAEF
oklch(80.9% 0.074 286.3)
-
Step 400
400
#9B95E7
oklch(70.8% 0.118 286.3)
-
Step 500
500
#8578E0
oklch(63.2% 0.152 286.9)
-
Step 600
600
#6F5ECD
oklch(55.5% 0.165 286.7)
-
Step 700
700
#5E4DB2
oklch(49.1% 0.154 287)
-
Step 800
800
#4C4090
oklch(42.7% 0.127 286.6)
-
Step 900
900 (this color)
#403874
oklch(38.1% 0.099 286.8)
-
Step 950
950
#252143
oklch(27.1% 0.062 286.9)
#403874 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) | #1F4276 | 0.049 |
| Deuteranopia (no green cones) | #1E3F73 | 0.048 |
| Tritanopia (no blue cones) | #304450 | 0.083 |
| Achromatopsia (no color) | #404040 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403874
#403874
oklch(38.1% 0.099 286.8)
- #484500
#484500
oklch(38.1% 0.082 106.9)
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 #403874, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.060
- Twilight Blue #0A437A ΔE 0.061
- Cobalt #1E488F ΔE 0.067
- Marine Blue #01386A ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.075
- Light Navy #155084 ΔE 0.077
Use #403874 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.