#66657A
Closest named color: Dim Gray (#696969). oklch(51.5% 0.033 287.4), rgb(102, 101, 122).
Aa
White text reads best on this color (5.66:1).
About this color
#66657A is a medium-dark, muted purple. In OKLCH its lightness is 52%, its chroma 0.033 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.033 away. White text reads best on it, at 5.66:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #66657A |
| RGB | rgb(102, 101, 122) |
| HSL | hsl(243, 9%, 44%) |
| OKLCH | oklch(51.5% 0.033 287.4) |
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 #66657A | 5.66:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #66657A | 3.70:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #66657A text on white | 5.66:1 | AA | Lc 78.3 | Fine for body text |
| #66657A text on black | 3.70:1 | AA large text | Lc -23.4 | 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 700.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8DF
oklch(88.4% 0.01 286.2)
-
Step 300
300
#C0BFCB
oklch(80.9% 0.017 289.9)
-
Step 400
400
#9F9EB0
oklch(70.6% 0.026 288.3)
-
Step 500
500
#88879D
oklch(63.2% 0.033 287.5)
-
Step 600
600
#727087
oklch(55.5% 0.035 289.2)
-
Step 700
700 (this color)
#66657A
oklch(51.5% 0.033 287.4)
-
Step 800
800
#4E4D5D
oklch(42.7% 0.026 288.1)
-
Step 900
900
#41404D
oklch(37.8% 0.022 288.8)
-
Step 950
950
#26262D
oklch(27.2% 0.013 285.5)
#66657A 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) | #60677B | 0.010 |
| Deuteranopia (no green cones) | #606679 | 0.010 |
| Tritanopia (no blue cones) | #62686C | 0.028 |
| Achromatopsia (no color) | #676767 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66657A
#66657A
oklch(51.5% 0.033 287.4)
- #696953
#696953
oklch(51.4% 0.033 107.5)
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 #66657A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.033
- Slate #516572 ΔE 0.034
- Battleship Gray #6C757D ΔE 0.048
- Metallic Blue #4F738E ΔE 0.049
- Dusty Grape #545775 ΔE 0.052
- Dusty Purple #825F87 ΔE 0.055
- Muted Purple #805B87 ΔE 0.057
- Grey Purple #826D8C ΔE 0.058
Use #66657A 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.