#66698D
Closest named color: Metallic Blue (#4F738E). oklch(53.2% 0.056 280.6), rgb(102, 105, 141).
Aa
White text reads best on this color (5.28:1).
About this color
#66698D is a medium-dark, muted purple. In OKLCH its lightness is 53%, its chroma 0.056 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.039 away. White text reads best on it, at 5.28:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #66698D |
| RGB | rgb(102, 105, 141) |
| HSL | hsl(235, 16%, 48%) |
| OKLCH | oklch(53.2% 0.056 280.6) |
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 #66698D | 5.28:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #66698D | 3.97:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #66698D text on white | 5.28:1 | AA | Lc 76.3 | Fine for body text |
| #66698D text on black | 3.97:1 | AA large text | Lc -25.4 | Dividers and decoration only |
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 600.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E3
oklch(88.5% 0.015 281.9)
-
Step 300
300
#BDBFD1
oklch(80.9% 0.025 280.8)
-
Step 400
400
#9B9EBA
oklch(70.6% 0.041 280.5)
-
Step 500
500
#8386A9
oklch(63% 0.053 280.9)
-
Step 600
600 (this color)
#66698D
oklch(53.2% 0.056 280.6)
-
Step 700
700
#5B5E7E
oklch(49.2% 0.051 280.2)
-
Step 800
800
#4A4C67
oklch(42.6% 0.045 281)
-
Step 900
900
#3E4054
oklch(37.8% 0.034 280.2)
-
Step 950
950
#242531
oklch(26.9% 0.022 281.1)
#66698D 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) | #5F6D8F | 0.014 |
| Deuteranopia (no green cones) | #5D6A8C | 0.013 |
| Tritanopia (no blue cones) | #5D6F75 | 0.050 |
| Achromatopsia (no color) | #6C6C6C | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66698D
#66698D
oklch(53.2% 0.056 280.6)
- #746E47
#746E47
oklch(53.4% 0.057 100.6)
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 #66698D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.039
- Grey Purple #826D8C ΔE 0.047
- Dull Blue #49759C ΔE 0.047
- Dusty Purple #825F87 ΔE 0.049
- Battleship Gray #6C757D ΔE 0.051
- Muted Purple #805B87 ΔE 0.053
- Dark Lavender #856798 ΔE 0.053
- Stormy Blue #507B9C ΔE 0.054
Use #66698D 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.