#423D5D
Closest named color: Dark Grey Blue (#29465B). oklch(37.9% 0.054 290.7), rgb(66, 61, 93).
Aa
White text reads best on this color (10.20:1).
About this color
#423D5D is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.054 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 10.20:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #423D5D |
| RGB | rgb(66, 61, 93) |
| HSL | hsl(249, 21%, 30%) |
| OKLCH | oklch(37.9% 0.054 290.7) |
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 #423D5D | 10.20:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #423D5D | 2.05:1 | Fails | Lc 10.3 | Not readable |
| #423D5D text on white | 10.20:1 | AAA | Lc 93.7 | Preferred for body text |
| #423D5D text on black | 2.05:1 | Fails | Lc -8.8 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D9D7E7
oklch(88.6% 0.022 291.7)
-
Step 300
300
#C0BDDA
oklch(81% 0.041 290.2)
-
Step 400
400
#A09AC7
oklch(70.7% 0.065 290.7)
-
Step 500
500
#8981B8
oklch(63.1% 0.082 290.5)
-
Step 600
600
#736AA4
oklch(55.7% 0.089 290.3)
-
Step 700
700
#61588D
oklch(49.2% 0.084 290.8)
-
Step 800
800
#4F4872
oklch(42.7% 0.069 290.8)
-
Step 900
900 (this color)
#423D5D
oklch(37.9% 0.054 290.7)
-
Step 950
950
#262336
oklch(26.8% 0.035 291.1)
#423D5D 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) | #35425E | 0.024 |
| Deuteranopia (no green cones) | #35405C | 0.022 |
| Tritanopia (no blue cones) | #3C4349 | 0.046 |
| Achromatopsia (no color) | #414141 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423D5D
#423D5D
oklch(37.9% 0.054 290.7)
- #434521
#434521
oklch(37.9% 0.055 111.5)
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 #423D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- Charcoal #264653 ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.054
- Onyx #343A40 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
- Gunmetal #293241 ΔE 0.072
- Dark Slate Gray #2F4F4F ΔE 0.073
Use #423D5D 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.