#66736E
Closest named color: Battleship Gray (#6C757D). oklch(54.3% 0.017 170.6), rgb(102, 115, 110).
Aa
White text reads best on this color (4.95:1).
About this color
#66736E is a medium-dark close to neutral grey. In OKLCH its lightness is 54%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.025 away. White text reads best on it, at 4.95:1.
| Hue family | Neutrals |
| Lightness | medium-dark (54%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.24:1 |
| White text | 4.95:1 |
Values
| HEX | #66736E |
| RGB | rgb(102, 115, 110) |
| HSL | hsl(157, 6%, 43%) |
| OKLCH | oklch(54.3% 0.017 170.6) |
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 #66736E | 4.95:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #66736E | 4.24:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #66736E text on white | 4.95:1 | AA | Lc 74.3 | Content text, not long reading |
| #66736E text on black | 4.24:1 | AA large text | Lc -27.4 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D6DAD9
oklch(88.5% 0.005 179.7)
-
Step 300
300
#BCC2C0
oklch(80.9% 0.007 174.3)
-
Step 400
400
#99A39F
oklch(70.6% 0.013 170.1)
-
Step 500
500
#808D88
oklch(63.1% 0.017 170.7)
-
Step 600
600 (this color)
#66736E
oklch(54.3% 0.017 170.6)
-
Step 700
700
#58645F
oklch(49.1% 0.017 168.7)
-
Step 800
800
#48514E
oklch(42.6% 0.013 173.7)
-
Step 900
900
#3C4341
oklch(37.6% 0.01 176.8)
-
Step 950
950
#232726
oklch(26.8% 0.006 179.2)
#66736E 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) | #72716E | 0.018 |
| Deuteranopia (no green cones) | #706F6E | 0.018 |
| Tritanopia (no blue cones) | #637371 | 0.006 |
| Achromatopsia (no color) | #707070 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66736E
#66736E
oklch(54.3% 0.017 170.6)
- #786C71
#786C71
oklch(54.4% 0.017 350.5)
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 #66736E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.025
- Dim Gray #696969 ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.039
- Grey Blue #647D8E ΔE 0.049
- Grey Brown #7F7053 ΔE 0.049
- Medium Grey #7D7F7C ΔE 0.053
- Steel Grey #6F828A ΔE 0.055
- Dark Taupe #7F684E ΔE 0.055
Use #66736E 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.