#423758
Closest named color: Onyx (#343A40). oklch(36.3% 0.057 298.9), rgb(66, 55, 88).
Aa
White text reads best on this color (10.94:1).
About this color
#423758 is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.057 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.053 away. White text reads best on it, at 10.94:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.91:1 |
| White text | 10.94:1 |
Values
| HEX | #423758 |
| RGB | rgb(66, 55, 88) |
| HSL | hsl(260, 23%, 28%) |
| OKLCH | oklch(36.3% 0.057 298.9) |
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 #423758 | 10.94:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #423758 | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #423758 text on white | 10.94:1 | AAA | Lc 95.3 | Preferred for body text |
| #423758 text on black | 1.91:1 | Fails | Lc -7.4 | 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
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DBD6E7
oklch(88.5% 0.024 299.3)
-
Step 300
300
#C4BBD9
oklch(80.9% 0.043 299.1)
-
Step 400
400
#A698C6
oklch(70.8% 0.068 298.6)
-
Step 500
500
#917EB8
oklch(63.2% 0.088 298.9)
-
Step 600
600
#7B66A3
oklch(55.5% 0.095 299.1)
-
Step 700
700
#68558C
oklch(49.2% 0.088 299)
-
Step 800
800
#544572
oklch(42.6% 0.075 298.5)
-
Step 900
900 (this color)
#423758
oklch(36.3% 0.057 298.9)
-
Step 950
950
#292236
oklch(26.9% 0.038 300)
#423758 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) | #2F3D59 | 0.034 |
| Deuteranopia (no green cones) | #313C57 | 0.031 |
| Tritanopia (no blue cones) | #3E3C43 | 0.045 |
| Achromatopsia (no color) | #3D3D3D | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423758
#423758
oklch(36.3% 0.057 298.9)
- #3B421E
#3B421E
oklch(36.3% 0.056 118.4)
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 #423758, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
- Gunmetal #293241 ΔE 0.061
- Charcoal #264653 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.063
Use #423758 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.