#42496E
Closest named color: Dusk (#4E5481). oklch(41.6% 0.063 275.2), rgb(66, 73, 110).
Aa
White text reads best on this color (8.71:1).
About this color
#42496E is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.063 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.046 away. White text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.40:1 |
| White text | 8.71:1 |
Values
| HEX | #42496E |
| RGB | rgb(66, 73, 110) |
| HSL | hsl(230, 25%, 35%) |
| OKLCH | oklch(41.6% 0.063 275.2) |
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 #42496E | 8.71:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #42496E | 2.40:1 | Fails | Lc 14.1 | Not readable |
| #42496E text on white | 8.71:1 | AAA | Lc 89.8 | Fine for body text |
| #42496E 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
#B9BFD9
oklch(80.8% 0.037 275.2)
-
Step 400
400
#969EC6
oklch(70.7% 0.059 276)
-
Step 500
500
#7C86B7
oklch(63.1% 0.075 275.2)
-
Step 600
600
#656FA3
oklch(55.5% 0.082 275.1)
-
Step 700
700
#545D8C
oklch(49.1% 0.076 275)
-
Step 800
800 (this color)
#42496E
oklch(41.6% 0.063 275.2)
-
Step 900
900
#3A405C
oklch(37.8% 0.049 274.5)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#42496E 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) | #3D4D70 | 0.013 |
| Deuteranopia (no green cones) | #3A496D | 0.012 |
| Tritanopia (no blue cones) | #355056 | 0.056 |
| Achromatopsia (no color) | #4B4B4B | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42496E
#42496E
oklch(41.6% 0.063 275.2)
- #564C21
#564C21
oklch(41.6% 0.063 96.4)
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 #42496E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.049
- YInMn Blue #415A77 ΔE 0.050
- Dusty Grape #545775 ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Light Navy #155084 ΔE 0.055
- Dusk Blue #26538D ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.059
Use #42496E 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.