#42335B
Closest named color: Prussian Blue (#1D3557). oklch(35.6% 0.07 300.2), rgb(66, 51, 91).
Aa
White text reads best on this color (11.31:1).
About this color
#42335B is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.070 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.058 away. White text reads best on it, at 11.31:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.070) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.85:1 |
| White text | 11.31:1 |
Values
| HEX | #42335B |
| RGB | rgb(66, 51, 91) |
| HSL | hsl(263, 28%, 28%) |
| OKLCH | oklch(35.6% 0.07 300.2) |
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 #42335B | 11.31:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #42335B | 1.85:1 | Fails | Lc 7.9 | Not readable |
| #42335B text on white | 11.31:1 | AAA | Lc 96.0 | Preferred for body text |
| #42335B text on black | 1.85:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C5BADE
oklch(81% 0.051 299.2)
-
Step 400
400
#A895CD
oklch(70.7% 0.083 299.8)
-
Step 500
500
#947AC0
oklch(63.1% 0.106 300.5)
-
Step 600
600
#7E62AD
oklch(55.6% 0.116 299.8)
-
Step 700
700
#6B5194
oklch(49.2% 0.107 300.4)
-
Step 800
800
#574278
oklch(42.6% 0.09 300.6)
-
Step 900
900 (this color)
#42335B
oklch(35.6% 0.07 300.2)
-
Step 950
950
#2A2139
oklch(27% 0.045 300.7)
#42335B 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) | #293A5D | 0.043 |
| Deuteranopia (no green cones) | #2B3A5A | 0.041 |
| Tritanopia (no blue cones) | #3D3A42 | 0.055 |
| Achromatopsia (no color) | #3A3A3A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42335B
#42335B
oklch(35.6% 0.07 300.2)
- #374112
#374112
oklch(35.5% 0.07 120.3)
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 #42335B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.063
- Onyx #343A40 ΔE 0.063
- Gunmetal #293241 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.066
- Charcoal Grey #3C4142 ΔE 0.071
- Charcoal #264653 ΔE 0.074
Use #42335B 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.