#42436F
Closest named color: Dark Grey Blue (#29465B). oklch(40.3% 0.073 281.6), rgb(66, 67, 111).
Aa
White text reads best on this color (9.27:1).
About this color
#42436F is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.073 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.053 away. White text reads best on it, at 9.27:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #42436F |
| RGB | rgb(66, 67, 111) |
| HSL | hsl(239, 25%, 35%) |
| OKLCH | oklch(40.3% 0.073 281.6) |
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 #42436F | 9.27:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #42436F | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #42436F text on white | 9.27:1 | AAA | Lc 91.3 | Preferred for body text |
| #42436F text on black | 2.26:1 | Fails | Lc -11.0 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BBBEDC
oklch(80.9% 0.042 280.9)
-
Step 400
400
#999CCB
oklch(70.7% 0.069 281.6)
-
Step 500
500
#8083BE
oklch(63.1% 0.088 281.3)
-
Step 600
600
#6A6CAA
oklch(55.6% 0.096 281.4)
-
Step 700
700
#595A92
oklch(49.2% 0.089 281.8)
-
Step 800
800 (this color)
#42436F
oklch(40.3% 0.073 281.6)
-
Step 900
900
#3C3E5F
oklch(37.7% 0.056 280.7)
-
Step 950
950
#232438
oklch(26.9% 0.037 281.4)
#42436F 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) | #344971 | 0.025 |
| Deuteranopia (no green cones) | #32466E | 0.024 |
| Tritanopia (no blue cones) | #354C53 | 0.065 |
| Achromatopsia (no color) | #474747 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42436F
#42436F
oklch(40.3% 0.073 281.6)
- #514912
#514912
oklch(40.2% 0.073 100.8)
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 #42436F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.053
- Dusk #4E5481 ΔE 0.058
- Twilight #4E518B ΔE 0.061
- Light Navy #155084 ΔE 0.061
- Twilight Blue #0A437A ΔE 0.061
- Dusk Blue #26538D ΔE 0.065
- Cobalt #1E488F ΔE 0.065
Use #42436F 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.