#423747
Closest named color: Onyx (#343A40). oklch(35.5% 0.031 315.2), rgb(66, 55, 71).
Aa
White text reads best on this color (11.23:1).
About this color
#423747 is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.030 away. White text reads best on it, at 11.23:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.23:1 |
Values
| HEX | #423747 |
| RGB | rgb(66, 55, 71) |
| HSL | hsl(281, 13%, 25%) |
| OKLCH | oklch(35.5% 0.031 315.2) |
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 #423747 | 11.23:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #423747 | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #423747 text on white | 11.23:1 | AAA | Lc 96.0 | Preferred for body text |
| #423747 text on black | 1.86:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE8ED
oklch(93.5% 0.007 312.3)
-
Step 200
200
#DCD7DF
oklch(88.5% 0.012 313.2)
-
Step 300
300
#C6BCCB
oklch(80.8% 0.023 314.7)
-
Step 400
400
#AA9AB1
oklch(70.7% 0.038 315.7)
-
Step 500
500
#95819D
oklch(63.1% 0.047 316.3)
-
Step 600
600
#7F6A88
oklch(55.5% 0.052 315.7)
-
Step 700
700
#6B5974
oklch(49.2% 0.048 314.4)
-
Step 800
800
#57495E
oklch(42.8% 0.038 314.4)
-
Step 900
900 (this color)
#423747
oklch(35.5% 0.031 315.2)
-
Step 950
950
#2A242D
oklch(27.1% 0.018 314.5)
#423747 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) | #353A48 | 0.023 |
| Deuteranopia (no green cones) | #373B46 | 0.022 |
| Tritanopia (no blue cones) | #42393C | 0.022 |
| Achromatopsia (no color) | #3B3B3B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423747
#423747
oklch(35.5% 0.031 315.2)
- #35402F
#35402F
oklch(35.6% 0.032 134.7)
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 #423747, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.037
- Gunmetal #293241 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.055
- Charcoal #264653 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.064
Use #423747 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.