#623F7D
Closest named color: Dark Slate Blue (#483D8B). oklch(43.6% 0.105 308.7), rgb(98, 63, 125).
Aa
White text reads best on this color (8.31:1).
About this color
#623F7D is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.105 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.054 away. White text reads best on it, at 8.31:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.52:1 |
| White text | 8.31:1 |
Values
| HEX | #623F7D |
| RGB | rgb(98, 63, 125) |
| HSL | hsl(274, 33%, 37%) |
| OKLCH | oklch(43.6% 0.105 308.7) |
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 #623F7D | 8.31:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #623F7D | 2.52:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #623F7D text on white | 8.31:1 | AAA | Lc 88.5 | Fine for body text |
| #623F7D text on black | 2.52:1 | Fails | Lc -13.7 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#E0D3EB
oklch(88.5% 0.035 309.7)
-
Step 300
300
#CCB6E0
oklch(80.8% 0.063 308.6)
-
Step 400
400
#B290D0
oklch(70.8% 0.098 308.3)
-
Step 500
500
#9F73C3
oklch(63.1% 0.125 308.5)
-
Step 600
600
#8A5AB0
oklch(55.6% 0.137 308.3)
-
Step 700
700
#754997
oklch(49% 0.128 308.4)
-
Step 800
800 (this color)
#623F7D
oklch(43.6% 0.105 308.7)
-
Step 900
900
#4E3463
oklch(37.7% 0.083 308.4)
-
Step 950
950
#2E1F3A
oklch(27.1% 0.052 308.8)
#623F7D 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) | #2F4D7F | 0.083 |
| Deuteranopia (no green cones) | #394F7B | 0.075 |
| Tritanopia (no blue cones) | #5E4958 | 0.075 |
| Achromatopsia (no color) | #4E4E4E | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #623F7D
#623F7D
oklch(43.6% 0.105 308.7)
- #3F5C10
#3F5C10
oklch(43.6% 0.106 128.9)
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 #623F7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Twilight #4E518B ΔE 0.056
- Rebecca Purple #663399 ΔE 0.056
- Dusk #4E5481 ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Dusty Grape #545775 ΔE 0.074
- Light Eggplant #894585 ΔE 0.078
- Brownish Purple #76424E ΔE 0.090
Use #623F7D 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.