#42354C
Closest named color: Onyx (#343A40). oklch(35.3% 0.043 310), rgb(66, 53, 76).
Aa
White text reads best on this color (11.38:1).
About this color
#42354C is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.043 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.039 away. White text reads best on it, at 11.38:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #42354C |
| RGB | rgb(66, 53, 76) |
| HSL | hsl(274, 18%, 25%) |
| OKLCH | oklch(35.3% 0.043 310) |
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 #42354C | 11.38:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #42354C | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #42354C text on white | 11.38:1 | AAA | Lc 96.2 | Preferred for body text |
| #42354C text on black | 1.84:1 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DDD6E2
oklch(88.5% 0.018 311.6)
-
Step 300
300
#C7BBD0
oklch(80.8% 0.032 310.9)
-
Step 400
400
#AA98B9
oklch(70.6% 0.051 309.6)
-
Step 500
500
#967FA7
oklch(63.2% 0.064 310.6)
-
Step 600
600
#806893
oklch(55.7% 0.071 309.6)
-
Step 700
700
#6C567D
oklch(49.1% 0.066 309.8)
-
Step 800
800
#584766
oklch(42.8% 0.054 309.2)
-
Step 900
900 (this color)
#42354C
oklch(35.3% 0.043 310)
-
Step 950
950
#2A2330
oklch(27% 0.026 309.1)
#42354C 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) | #31394D | 0.030 |
| Deuteranopia (no green cones) | #343A4B | 0.028 |
| Tritanopia (no blue cones) | #41383D | 0.031 |
| Achromatopsia (no color) | #3A3A3A | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42354C
#42354C
oklch(35.3% 0.043 310)
- #344028
#344028
oklch(35.3% 0.043 129.9)
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 #42354C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.048
- Gunmetal #293241 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #42354C 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.