#42395B
Closest named color: Dark Grey Blue (#29465B). oklch(36.9% 0.058 295.6), rgb(66, 57, 91).
Aa
White text reads best on this color (10.67:1).
About this color
#42395B is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.058 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.051 away. White text reads best on it, at 10.67:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.96:1 |
| White text | 10.67:1 |
Values
| HEX | #42395B |
| RGB | rgb(66, 57, 91) |
| HSL | hsl(256, 23%, 29%) |
| OKLCH | oklch(36.9% 0.058 295.6) |
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 #42395B | 10.67:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #42395B | 1.96:1 | Fails | Lc 9.2 | Not readable |
| #42395B text on white | 10.67:1 | AAA | Lc 94.7 | Preferred for body text |
| #42395B text on black | 1.96:1 | Fails | Lc -7.9 | 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 900.
-
Step 50
50
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C2BBDA
oklch(80.8% 0.044 295.8)
-
Step 400
400
#A498C8
oklch(70.7% 0.07 296)
-
Step 500
500
#8E7EBA
oklch(63.1% 0.09 296)
-
Step 600
600
#7867A6
oklch(55.6% 0.097 295.5)
-
Step 700
700
#65558E
oklch(49% 0.091 295.8)
-
Step 800
800
#524673
oklch(42.6% 0.074 295.3)
-
Step 900
900 (this color)
#42395B
oklch(36.9% 0.058 295.6)
-
Step 950
950
#282337
oklch(27.1% 0.037 295.3)
#42395B 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) | #303E5C | 0.031 |
| Deuteranopia (no green cones) | #323E5A | 0.029 |
| Tritanopia (no blue cones) | #3D3F45 | 0.049 |
| Achromatopsia (no color) | #3E3E3E | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42395B
#42395B
oklch(36.9% 0.058 295.6)
- #3E431D
#3E431D
oklch(36.8% 0.058 115.5)
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 #42395B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.051
- Onyx #343A40 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.060
- Charcoal #264653 ΔE 0.060
- Gunmetal #293241 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.069
Use #42395B 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.