#424684
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.102 278.3), rgb(66, 70, 132).
Aa
White text reads best on this color (8.60:1).
About this color
#424684 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.102 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.029 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #424684 |
| RGB | rgb(66, 70, 132) |
| HSL | hsl(236, 33%, 39%) |
| OKLCH | oklch(42.2% 0.102 278.3) |
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 #424684 | 8.60:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #424684 | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #424684 text on white | 8.60:1 | AAA | Lc 89.4 | Fine for body text |
| #424684 text on black | 2.44:1 | Fails | Lc -12.8 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B7BDE7
oklch(80.8% 0.06 278.6)
-
Step 400
400
#939BDC
oklch(70.8% 0.095 278.3)
-
Step 500
500
#7981D2
oklch(63.2% 0.122 278)
-
Step 600
600
#6369BF
oklch(55.7% 0.132 278.2)
-
Step 700
700
#5257A5
oklch(49.2% 0.123 278.1)
-
Step 800
800 (this color)
#424684
oklch(42.2% 0.102 278.3)
-
Step 900
900
#383C6B
oklch(37.6% 0.08 278.1)
-
Step 950
950
#21243F
oklch(27.2% 0.05 277.7)
#424684 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) | #2C4F86 | 0.035 |
| Deuteranopia (no green cones) | #274983 | 0.034 |
| Tritanopia (no blue cones) | #29535E | 0.090 |
| Achromatopsia (no color) | #4C4C4C | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424684
#424684
oklch(42.2% 0.102 278.3)
- #5A4E00
#5A4E00
oklch(42.3% 0.088 99.1)
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 #424684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Blueberry #464196 ΔE 0.034
- Twilight #4E518B ΔE 0.038
- Cobalt #1E488F ΔE 0.044
- Dusk Blue #26538D ΔE 0.045
- Dusk #4E5481 ΔE 0.048
- Light Navy #155084 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.059
Use #424684 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.