#40499B
Closest named color: Blueberry (#464196). oklch(44.3% 0.132 274.9), rgb(64, 73, 155).
Aa
White text reads best on this color (7.94:1).
About this color
#40499B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.132 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.022 away. White text reads best on it, at 7.94:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.64:1 |
| White text | 7.94:1 |
Values
| HEX | #40499B |
| RGB | rgb(64, 73, 155) |
| HSL | hsl(234, 42%, 43%) |
| OKLCH | oklch(44.3% 0.132 274.9) |
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 #40499B | 7.94:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #40499B | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #40499B text on white | 7.94:1 | AAA | Lc 87.3 | Fine for body text |
| #40499B text on black | 2.64:1 | Fails | Lc -14.8 | 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 800.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B2BDF3
oklch(80.9% 0.077 275.6)
-
Step 400
400
#8A99ED
oklch(70.6% 0.124 275.1)
-
Step 500
500
#6F7EE7
oklch(63.1% 0.157 274.9)
-
Step 600
600
#5965D6
oklch(55.7% 0.172 274.8)
-
Step 700
700
#4953B9
oklch(49.1% 0.159 274.7)
-
Step 800
800 (this color)
#40499B
oklch(44.3% 0.132 274.9)
-
Step 900
900
#333A77
oklch(37.6% 0.103 275.4)
-
Step 950
950
#1E2346
oklch(27.1% 0.065 275.1)
#40499B 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) | #1B559E | 0.044 |
| Deuteranopia (no green cones) | #054D99 | 0.049 |
| Tritanopia (no blue cones) | #025C6B | 0.117 |
| Achromatopsia (no color) | #515151 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40499B
#40499B
oklch(44.3% 0.132 274.9)
- #635200
#635200
oklch(44.3% 0.091 95.1)
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 #40499B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.022
- Dark Slate Blue #483D8B ΔE 0.039
- Twilight #4E518B ΔE 0.043
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.054
- Dusk #4E5481 ΔE 0.061
- Light Navy #155084 ΔE 0.062
Use #40499B 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.