#623F7F
Closest named color: Dark Slate Blue (#483D8B). oklch(43.7% 0.108 307.8), rgb(98, 63, 127).
Aa
White text reads best on this color (8.27:1).
About this color
#623F7F is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.108 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.052 away. White text reads best on it, at 8.27:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #623F7F |
| RGB | rgb(98, 63, 127) |
| HSL | hsl(273, 34%, 37%) |
| OKLCH | oklch(43.7% 0.108 307.8) |
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 #623F7F | 8.27:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #623F7F | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #623F7F text on white | 8.27:1 | AAA | Lc 88.4 | Fine for body text |
| #623F7F text on black | 2.53:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F4
oklch(93.6% 0.018 306.7)
-
Step 200
200
#DFD3EC
oklch(88.4% 0.036 307.2)
-
Step 300
300
#CCB6E1
oklch(80.9% 0.064 308.1)
-
Step 400
400
#B28FD1
oklch(70.6% 0.101 308.2)
-
Step 500
500
#9F72C5
oklch(63% 0.129 308.1)
-
Step 600
600
#8A59B2
oklch(55.6% 0.141 307.9)
-
Step 700
700
#754999
oklch(49.1% 0.13 307.7)
-
Step 800
800 (this color)
#623F7F
oklch(43.7% 0.108 307.8)
-
Step 900
900
#4E3464
oklch(37.7% 0.085 307.8)
-
Step 950
950
#2E1F3A
oklch(27.1% 0.052 308.8)
#623F7F 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) | #2E4D81 | 0.084 |
| Deuteranopia (no green cones) | #384F7D | 0.076 |
| Tritanopia (no blue cones) | #5E4A59 | 0.078 |
| Achromatopsia (no color) | #4E4E4E | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #623F7F
#623F7F
oklch(43.7% 0.108 307.8)
- #405C0B
#405C0B
oklch(43.7% 0.108 128)
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 #623F7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.056
- Blueberry #464196 ΔE 0.061
- Dusk #4E5481 ΔE 0.063
- Dusty Grape #545775 ΔE 0.075
- Light Eggplant #894585 ΔE 0.078
- Denim Blue #3B5B92 ΔE 0.090
Use #623F7F 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.