#623F74
Closest named color: Twilight (#4E518B). oklch(43.1% 0.094 313.4), rgb(98, 63, 116).
Aa
White text reads best on this color (8.45:1).
About this color
#623F74 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.094 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.061 away. White text reads best on it, at 8.45:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #623F74 |
| RGB | rgb(98, 63, 116) |
| HSL | hsl(280, 30%, 35%) |
| OKLCH | oklch(43.1% 0.094 313.4) |
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 #623F74 | 8.45:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #623F74 | 2.48:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #623F74 text on white | 8.45:1 | AAA | Lc 89.0 | Fine for body text |
| #623F74 text on black | 2.48:1 | Fails | Lc -13.2 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F2
oklch(93.7% 0.016 313.6)
-
Step 200
200
#E0D4E8
oklch(88.6% 0.03 312.1)
-
Step 300
300
#CDB7DA
oklch(80.9% 0.054 313)
-
Step 400
400
#B491C8
oklch(70.8% 0.087 313)
-
Step 500
500
#A174B9
oklch(63% 0.112 313.3)
-
Step 600
600
#8C5CA5
oklch(55.6% 0.121 313.3)
-
Step 700
700
#774B8E
oklch(49.1% 0.114 313.1)
-
Step 800
800 (this color)
#623F74
oklch(43.1% 0.094 313.4)
-
Step 900
900
#4F355D
oklch(37.6% 0.073 313.1)
-
Step 950
950
#2E1F36
oklch(26.8% 0.046 313.3)
#623F74 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) | #354B76 | 0.076 |
| Deuteranopia (no green cones) | #3E4E73 | 0.069 |
| Tritanopia (no blue cones) | #614754 | 0.064 |
| Achromatopsia (no color) | #4D4D4D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #623F74
#623F74
oklch(43.1% 0.094 313.4)
- #3A5B20
#3A5B20
oklch(43.1% 0.095 133.5)
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 #623F74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.062
- Dusk #4E5481 ΔE 0.063
- Dusty Grape #545775 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.071
- Blueberry #464196 ΔE 0.074
- Brownish Purple #76424E ΔE 0.077
- Light Eggplant #894585 ΔE 0.081
Use #623F74 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.