#423558
Closest named color: Onyx (#343A40). oklch(35.9% 0.061 300.4), rgb(66, 53, 88).
Aa
White text reads best on this color (11.15:1).
About this color
#423558 is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.061 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.056 away. White text reads best on it, at 11.15:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.88:1 |
| White text | 11.15:1 |
Values
| HEX | #423558 |
| RGB | rgb(66, 53, 88) |
| HSL | hsl(262, 25%, 28%) |
| OKLCH | oklch(35.9% 0.061 300.4) |
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 #423558 | 11.15:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #423558 | 1.88:1 | Fails | Lc 8.2 | Not readable |
| #423558 text on white | 11.15:1 | AAA | Lc 95.7 | Preferred for body text |
| #423558 text on black | 1.88:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DBD6E8
oklch(88.5% 0.025 298.6)
-
Step 300
300
#C5BADA
oklch(80.8% 0.046 301)
-
Step 400
400
#A896C8
oklch(70.6% 0.074 301)
-
Step 500
500
#937CBA
oklch(63.1% 0.094 300.8)
-
Step 600
600
#7D65A6
oklch(55.7% 0.101 300.1)
-
Step 700
700
#6A538E
oklch(49.1% 0.095 300.9)
-
Step 800
800
#564473
oklch(42.6% 0.079 300.8)
-
Step 900
900 (this color)
#423558
oklch(35.9% 0.061 300.4)
-
Step 950
950
#292237
oklch(27% 0.039 299.1)
#423558 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) | #2D3B59 | 0.037 |
| Deuteranopia (no green cones) | #2F3B57 | 0.035 |
| Tritanopia (no blue cones) | #3E3B42 | 0.049 |
| Achromatopsia (no color) | #3B3B3B | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423558
#423558
oklch(35.9% 0.061 300.4)
- #38421A
#38421A
oklch(36% 0.062 121.3)
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 #423558, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.060
- Gunmetal #293241 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.061
- Charcoal Grey #3C4142 ΔE 0.063
- Charcoal #264653 ΔE 0.067
Use #423558 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.