#403283
Closest named color: Dark Slate Blue (#483D8B). oklch(38.1% 0.13 286.4), rgb(64, 50, 131).
Aa
White text reads best on this color (10.48:1).
About this color
#403283 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.130 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 10.48:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.48:1 |
Values
| HEX | #403283 |
| RGB | rgb(64, 50, 131) |
| HSL | hsl(250, 45%, 35%) |
| OKLCH | oklch(38.1% 0.13 286.4) |
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 #403283 | 10.48:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #403283 | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #403283 text on white | 10.48:1 | AAA | Lc 94.0 | Preferred for body text |
| #403283 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FD
oklch(93.7% 0.028 285.8)
-
Step 200
200
#D6D5FC
oklch(88.6% 0.053 286.4)
-
Step 300
300
#BBB8FD
oklch(81% 0.097 286)
-
Step 400
400
#9A8FFC
oklch(70.6% 0.156 286.3)
-
Step 500
500
#846EFA
oklch(63% 0.201 286.3)
-
Step 600
600
#7051E9
oklch(55.5% 0.218 286.3)
-
Step 700
700
#5F40CB
oklch(49.1% 0.203 286.6)
-
Step 800
800
#4D36A4
oklch(42.7% 0.168 286.5)
-
Step 900
900 (this color)
#403283
oklch(38.1% 0.13 286.4)
-
Step 950
950
#251E4C
oklch(27.1% 0.082 286.6)
#403283 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) | #004186 | 0.069 |
| Deuteranopia (no green cones) | #003D81 | 0.068 |
| Tritanopia (no blue cones) | #284555 | 0.109 |
| Achromatopsia (no color) | #3F3F3F | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403283
#403283
oklch(38.1% 0.13 286.4)
- #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 #403283, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.049
- Cobalt #1E488F ΔE 0.067
- Twilight Blue #0A437A ΔE 0.072
- Indigo #4B0082 ΔE 0.076
- Sapphire #2138AB ΔE 0.078
- Rebecca Purple #663399 ΔE 0.079
- Imperial Purple #480CA8 ΔE 0.079
Use #403283 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.