#424799
Closest named color: Blueberry (#464196). oklch(43.9% 0.132 276.9), rgb(66, 71, 153).
Aa
White text reads best on this color (8.09:1).
About this color
#424799 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.132 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.016 away. White text reads best on it, at 8.09:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #424799 |
| RGB | rgb(66, 71, 153) |
| HSL | hsl(237, 40%, 43%) |
| OKLCH | oklch(43.9% 0.132 276.9) |
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 #424799 | 8.09:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #424799 | 2.59:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #424799 text on white | 8.09:1 | AAA | Lc 87.8 | Fine for body text |
| #424799 text on black | 2.59:1 | Fails | Lc -14.4 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D1D7F6
oklch(88.4% 0.043 276.8)
-
Step 300
300
#B3BDF3
oklch(80.9% 0.077 276.4)
-
Step 400
400
#8D99ED
oklch(70.8% 0.123 276.6)
-
Step 500
500
#737DE7
oklch(63.2% 0.158 276.8)
-
Step 600
600
#5D63D5
oklch(55.5% 0.172 277)
-
Step 700
700
#4D52B8
oklch(49.1% 0.158 276.8)
-
Step 800
800 (this color)
#424799
oklch(43.9% 0.132 276.9)
-
Step 900
900
#353A77
oklch(37.8% 0.103 276.8)
-
Step 950
950
#1F2246
oklch(27% 0.066 277.4)
#424799 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) | #18539C | 0.048 |
| Deuteranopia (no green cones) | #054C97 | 0.053 |
| Tritanopia (no blue cones) | #135A69 | 0.116 |
| Achromatopsia (no color) | #505050 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424799
#424799
oklch(43.9% 0.132 276.9)
- #615200
#615200
oklch(44% 0.091 96.9)
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 #424799, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.016
- Dark Slate Blue #483D8B ΔE 0.033
- Twilight #4E518B ΔE 0.044
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.058
- Dusk #4E5481 ΔE 0.062
- Light Navy #155084 ΔE 0.064
Use #424799 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.