#42496D
Closest named color: Dusk (#4E5481). oklch(41.5% 0.061 275), rgb(66, 73, 109).
Aa
White text reads best on this color (8.73:1).
About this color
#42496D is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.061 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.047 away. White text reads best on it, at 8.73:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #42496D |
| RGB | rgb(66, 73, 109) |
| HSL | hsl(230, 25%, 34%) |
| OKLCH | oklch(41.5% 0.061 275) |
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 #42496D | 8.73:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #42496D | 2.40:1 | Fails | Lc 14.1 | Not readable |
| #42496D text on white | 8.73:1 | AAA | Lc 89.9 | Fine for body text |
| #42496D text on black | 2.40:1 | Fails | Lc -12.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD8
oklch(80.8% 0.036 274.9)
-
Step 400
400
#969EC5
oklch(70.7% 0.058 275.8)
-
Step 500
500
#7C86B6
oklch(63% 0.073 275)
-
Step 600
600
#6670A2
oklch(55.7% 0.079 274.9)
-
Step 700
700
#545D8B
oklch(49.1% 0.075 274.9)
-
Step 800
800 (this color)
#42496D
oklch(41.5% 0.061 275)
-
Step 900
900
#3A405B
oklch(37.8% 0.047 274.3)
-
Step 950
950
#222535
oklch(26.9% 0.03 276)
#42496D 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) | #3D4D6F | 0.013 |
| Deuteranopia (no green cones) | #3A496C | 0.012 |
| Tritanopia (no blue cones) | #355056 | 0.054 |
| Achromatopsia (no color) | #4B4B4B | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42496D
#42496D
oklch(41.5% 0.061 275)
- #564B22
#564B22
oklch(41.4% 0.061 94.6)
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 #42496D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- YInMn Blue #415A77 ΔE 0.050
- Dusty Grape #545775 ΔE 0.053
- Twilight #4E518B ΔE 0.056
- Light Navy #155084 ΔE 0.056
- Dusk Blue #26538D ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.060
Use #42496D 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.