#423767
Closest named color: Dark Slate Blue (#483D8B). oklch(37.2% 0.081 292.6), rgb(66, 55, 103).
Aa
White text reads best on this color (10.63:1).
About this color
#423767 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.081 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 10.63:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #423767 |
| RGB | rgb(66, 55, 103) |
| HSL | hsl(254, 30%, 31%) |
| OKLCH | oklch(37.2% 0.081 292.6) |
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 #423767 | 10.63:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #423767 | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #423767 text on white | 10.63:1 | AAA | Lc 94.6 | Preferred for body text |
| #423767 text on black | 1.97:1 | Fails | Lc -8.0 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#D9D6EE
oklch(88.6% 0.033 291.5)
-
Step 300
300
#C1BAE5
oklch(80.9% 0.06 292.5)
-
Step 400
400
#A295D8
oklch(70.6% 0.097 292.6)
-
Step 500
500
#8C7ACE
oklch(63.1% 0.124 292.3)
-
Step 600
600
#7761BA
oklch(55.5% 0.135 292.9)
-
Step 700
700
#6450A1
oklch(49.1% 0.126 292.5)
-
Step 800
800
#524282
oklch(42.7% 0.104 293)
-
Step 900
900 (this color)
#423767
oklch(37.2% 0.081 292.6)
-
Step 950
950
#27213D
oklch(26.9% 0.051 292.4)
#423767 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) | #273F69 | 0.044 |
| Deuteranopia (no green cones) | #293D66 | 0.040 |
| Tritanopia (no blue cones) | #39404A | 0.066 |
| Achromatopsia (no color) | #3E3E3E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423767
#423767
oklch(37.2% 0.081 292.6)
- #414403
#414403
oklch(37.1% 0.081 112.6)
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 #423767, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.070
- Marine Blue #01386A ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.074
- Charcoal #264653 ΔE 0.075
- Onyx #343A40 ΔE 0.077
Use #423767 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.