#42608F
Closest named color: Dusky Blue (#475F94). oklch(48.7% 0.084 259.1), rgb(66, 96, 143).
Aa
White text reads best on this color (6.36:1).
About this color
#42608F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.084 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.011 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #42608F |
| RGB | rgb(66, 96, 143) |
| HSL | hsl(217, 37%, 41%) |
| OKLCH | oklch(48.7% 0.084 259.1) |
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 #42608F | 6.36:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #42608F | 3.30:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #42608F text on white | 6.36:1 | AA | Lc 81.5 | Fine for body text |
| #42608F text on black | 3.30:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B1C2DB
oklch(80.9% 0.04 257.9)
-
Step 400
400
#88A2CA
oklch(70.7% 0.066 258.9)
-
Step 500
500
#6B8BBC
oklch(63.2% 0.083 258.7)
-
Step 600
600
#5374A8
oklch(55.6% 0.09 259.2)
-
Step 700
700 (this color)
#42608F
oklch(48.7% 0.084 259.1)
-
Step 800
800
#374F75
oklch(42.6% 0.07 259.3)
-
Step 900
900
#30425E
oklch(37.7% 0.054 259)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#42608F 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) | #4D6391 | 0.017 |
| Deuteranopia (no green cones) | #445C8E | 0.011 |
| Tritanopia (no blue cones) | #1A6A71 | 0.074 |
| Achromatopsia (no color) | #5F5F5F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42608F
#42608F
oklch(48.7% 0.084 259.1)
- #795920
#795920
oklch(48.6% 0.084 78.6)
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 #42608F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.011
- Denim #3B638C ΔE 0.013
- Denim Blue #3B5B92 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.032
- Dusk #4E5481 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.040
- Peacock Blue #016795 ΔE 0.042
- Twilight #4E518B ΔE 0.043
Use #42608F 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.