#403F92
Closest named color: Blueberry (#464196). oklch(41.7% 0.133 279.5), rgb(64, 63, 146).
Aa
White text reads best on this color (8.95:1).
About this color
#403F92 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.133 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.013 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #403F92 |
| RGB | rgb(64, 63, 146) |
| HSL | hsl(241, 40%, 41%) |
| OKLCH | oklch(41.7% 0.133 279.5) |
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 #403F92 | 8.95:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #403F92 | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #403F92 text on white | 8.95:1 | AAA | Lc 90.3 | Preferred for body text |
| #403F92 text on black | 2.34:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B6BCF3
oklch(81% 0.078 279.7)
-
Step 400
400
#9197ED
oklch(70.7% 0.125 279.6)
-
Step 500
500
#787BE7
oklch(63.1% 0.159 279.6)
-
Step 600
600
#6261D5
oklch(55.5% 0.174 279.5)
-
Step 700
700
#5250B9
oklch(49.2% 0.161 279.5)
-
Step 800
800 (this color)
#403F92
oklch(41.7% 0.133 279.5)
-
Step 900
900
#383977
oklch(37.8% 0.103 279.5)
-
Step 950
950
#202246
oklch(27.1% 0.066 278.6)
#403F92 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) | #044D95 | 0.058 |
| Deuteranopia (no green cones) | #004690 | 0.057 |
| Tritanopia (no blue cones) | #185262 | 0.115 |
| Achromatopsia (no color) | #494949 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403F92
#403F92
oklch(41.7% 0.133 279.5)
- #584C00
#584C00
oklch(41.6% 0.086 98.8)
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 #403F92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.013
- Dark Slate Blue #483D8B ΔE 0.017
- Cobalt #1E488F ΔE 0.044
- Twilight #4E518B ΔE 0.059
- Dusk Blue #26538D ΔE 0.060
- Sapphire #2138AB ΔE 0.061
- Light Navy #155084 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.070
Use #403F92 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.