#424773
Closest named color: Dusk (#4E5481). oklch(41.4% 0.074 277.7), rgb(66, 71, 115).
Aa
White text reads best on this color (8.82:1).
About this color
#424773 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.074 and its hue 278°. 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 8.82:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.38:1 |
| White text | 8.82:1 |
Values
| HEX | #424773 |
| RGB | rgb(66, 71, 115) |
| HSL | hsl(234, 27%, 35%) |
| OKLCH | oklch(41.4% 0.074 277.7) |
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 #424773 | 8.82:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #424773 | 2.38:1 | Fails | Lc 13.9 | Not readable |
| #424773 text on white | 8.82:1 | AAA | Lc 90.1 | Preferred for body text |
| #424773 text on black | 2.38:1 | Fails | Lc -12.2 | 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
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#B9BFDD
oklch(81% 0.043 276.5)
-
Step 400
400
#969DCC
oklch(70.7% 0.069 277.9)
-
Step 500
500
#7D84BE
oklch(63.1% 0.088 278.3)
-
Step 600
600
#666DAB
oklch(55.6% 0.096 277.9)
-
Step 700
700
#555B93
oklch(49.1% 0.09 277.9)
-
Step 800
800 (this color)
#424773
oklch(41.4% 0.074 277.7)
-
Step 900
900
#3A3E60
oklch(37.6% 0.058 278.1)
-
Step 950
950
#222538
oklch(27.1% 0.036 276.8)
#424773 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) | #384C75 | 0.019 |
| Deuteranopia (no green cones) | #354972 | 0.019 |
| Tritanopia (no blue cones) | #335057 | 0.066 |
| Achromatopsia (no color) | #4A4A4A | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424773
#424773
oklch(41.4% 0.074 277.7)
- #564B15
#564B15
oklch(41.3% 0.073 97.5)
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 #424773, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.047
- Twilight #4E518B ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.053
- Light Navy #155084 ΔE 0.053
- Dusk Blue #26538D ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.056
- YInMn Blue #415A77 ΔE 0.056
- Dusty Grape #545775 ΔE 0.058
Use #424773 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.