#40499E
Closest named color: Blueberry (#464196). oklch(44.5% 0.137 274.9), rgb(64, 73, 158).
Aa
White text reads best on this color (7.88:1).
About this color
#40499E is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.137 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.024 away. White text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #40499E |
| RGB | rgb(64, 73, 158) |
| HSL | hsl(234, 42%, 44%) |
| OKLCH | oklch(44.5% 0.137 274.9) |
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 #40499E | 7.88:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #40499E | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #40499E text on white | 7.88:1 | AAA | Lc 87.1 | Fine for body text |
| #40499E text on black | 2.66:1 | Fails | Lc -15.0 | Dividers and decoration only |
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
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF5
oklch(80.9% 0.08 275.1)
-
Step 400
400
#8999F0
oklch(70.7% 0.128 274.7)
-
Step 500
500
#6E7DEA
oklch(63% 0.163 274.8)
-
Step 600
600
#5864D9
oklch(55.7% 0.177 274.7)
-
Step 700
700
#4952BC
oklch(49.2% 0.165 274.9)
-
Step 800
800 (this color)
#40499E
oklch(44.5% 0.137 274.9)
-
Step 900
900
#323A79
oklch(37.7% 0.106 274.7)
-
Step 950
950
#1D2247
oklch(26.9% 0.068 275)
#40499E 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) | #1656A1 | 0.047 |
| Deuteranopia (no green cones) | #004E9C | 0.050 |
| Tritanopia (no blue cones) | #005D6C | 0.121 |
| Achromatopsia (no color) | #515151 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40499E
#40499E
oklch(44.5% 0.137 274.9)
- #645300
#645300
oklch(44.6% 0.092 95.3)
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 #40499E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.024
- Dark Slate Blue #483D8B ΔE 0.042
- Twilight #4E518B ΔE 0.046
- Cobalt #1E488F ΔE 0.047
- Dusk Blue #26538D ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.056
- Sapphire #2138AB ΔE 0.064
- Dusk #4E5481 ΔE 0.065
Use #40499E 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.