#423968
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.079 290.9), rgb(66, 57, 104).
Aa
White text reads best on this color (10.41:1).
About this color
#423968 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.079 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.060 away. White text reads best on it, at 10.41:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.079) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.01:1 |
| White text | 10.41:1 |
Values
| HEX | #423968 |
| RGB | rgb(66, 57, 104) |
| HSL | hsl(251, 29%, 32%) |
| OKLCH | oklch(37.7% 0.079 290.9) |
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 #423968 | 10.41:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #423968 | 2.01:1 | Fails | Lc 9.8 | Not readable |
| #423968 text on white | 10.41:1 | AAA | Lc 94.1 | Preferred for body text |
| #423968 text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D9D6EE
oklch(88.6% 0.033 291.5)
-
Step 300
300
#C0BBE5
oklch(81% 0.059 290.5)
-
Step 400
400
#A096D8
oklch(70.6% 0.096 290.7)
-
Step 500
500
#8A7BCD
oklch(63.1% 0.121 290.9)
-
Step 600
600
#7563BA
oklch(55.7% 0.132 291)
-
Step 700
700
#6251A0
oklch(49% 0.123 291.1)
-
Step 800
800
#504382
oklch(42.7% 0.102 290.9)
-
Step 900
900 (this color)
#423968
oklch(37.7% 0.079 290.9)
-
Step 950
950
#27223D
oklch(27.1% 0.049 291.2)
#423968 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) | #2A416A | 0.040 |
| Deuteranopia (no green cones) | #2B3F67 | 0.037 |
| Tritanopia (no blue cones) | #39424B | 0.066 |
| Achromatopsia (no color) | #404040 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423968
#423968
oklch(37.7% 0.079 290.9)
- #444506
#444506
oklch(37.7% 0.079 110.6)
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 #423968, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.067
- Charcoal #264653 ΔE 0.072
- Dark Blue Grey #1F3B4D ΔE 0.073
- Marine Blue #01386A ΔE 0.074
- Onyx #343A40 ΔE 0.077
Use #423968 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.