#673A70
Closest named color: Dark Slate Blue (#483D8B). oklch(42.6% 0.101 320.8), rgb(103, 58, 112).
Aa
White text reads best on this color (8.69:1).
About this color
#673A70 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.101 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.072 away. White text reads best on it, at 8.69:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #673A70 |
| RGB | rgb(103, 58, 112) |
| HSL | hsl(290, 32%, 33%) |
| OKLCH | oklch(42.6% 0.101 320.8) |
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 #673A70 | 8.69:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #673A70 | 2.41:1 | Fails | Lc 14.4 | Not readable |
| #673A70 text on white | 8.69:1 | AAA | Lc 89.6 | Fine for body text |
| #673A70 text on black | 2.41:1 | Fails | Lc -12.7 | 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 800.
-
Step 50
50
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F1
oklch(93.5% 0.018 320.1)
-
Step 200
200
#E3D2E7
oklch(88.4% 0.034 319.8)
-
Step 300
300
#D2B5D8
oklch(80.9% 0.058 320.5)
-
Step 400
400
#BC8DC5
oklch(70.7% 0.095 320.9)
-
Step 500
500
#AA70B6
oklch(63.1% 0.12 320.6)
-
Step 600
600
#9557A2
oklch(55.6% 0.131 320.5)
-
Step 700
700
#7F468A
oklch(49% 0.122 321)
-
Step 800
800 (this color)
#673A70
oklch(42.6% 0.101 320.8)
-
Step 900
900
#54335B
oklch(37.8% 0.078 320.4)
-
Step 950
950
#311E35
oklch(27% 0.049 320.5)
#673A70 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) | #324872 | 0.092 |
| Deuteranopia (no green cones) | #3F4D6E | 0.082 |
| Tritanopia (no blue cones) | #68414F | 0.064 |
| Achromatopsia (no color) | #4B4B4B | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673A70
#673A70
oklch(42.6% 0.101 320.8)
- #2C5C23
#2C5C23
oklch(42.7% 0.102 140.6)
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 #673A70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.072
- Rebecca Purple #663399 ΔE 0.072
- Brownish Purple #76424E ΔE 0.074
- Twilight #4E518B ΔE 0.076
- Dusk #4E5481 ΔE 0.078
- Light Eggplant #894585 ΔE 0.079
- Dusty Grape #545775 ΔE 0.082
- Purple Brown #673A3F ΔE 0.083
Use #673A70 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.