#66828A
Closest named color: Steel Grey (#6F828A). oklch(58.8% 0.034 217.1), rgb(102, 130, 138).
Aa
Black text reads best on this color (5.12:1).
About this color
#66828A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.034 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.012 away. Black text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #66828A |
| RGB | rgb(102, 130, 138) |
| HSL | hsl(193, 15%, 47%) |
| OKLCH | oklch(58.8% 0.034 217.1) |
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 #66828A | 4.09:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #66828A | 5.12:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #66828A text on white | 4.09:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #66828A text on black | 5.12:1 | AA | Lc -33.5 | Non-text elements, placeholder text |
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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEC
oklch(93.7% 0.005 214.3)
-
Step 200
200
#D3DBDD
oklch(88.6% 0.009 214.3)
-
Step 300
300
#B6C3C7
oklch(80.8% 0.015 218.1)
-
Step 400
400
#90A5AB
oklch(70.8% 0.025 216.8)
-
Step 500
500
#758F96
oklch(63.2% 0.031 215.9)
-
Step 600
600 (this color)
#66828A
oklch(58.8% 0.034 217.1)
-
Step 700
700
#4C656D
oklch(49% 0.032 219.4)
-
Step 800
800
#3F5358
oklch(42.7% 0.026 214.7)
-
Step 900
900
#354449
oklch(37.6% 0.021 220.1)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#66828A 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) | #7C808A | 0.030 |
| Deuteranopia (no green cones) | #777B8A | 0.029 |
| Tritanopia (no blue cones) | #5B8584 | 0.020 |
| Achromatopsia (no color) | #7D7D7D | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66828A
#66828A
oklch(58.8% 0.034 217.1)
- #90766E
#90766E
oklch(58.8% 0.035 37.8)
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 #66828A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.012
- Battleship Grey #6B7C85 ΔE 0.017
- Grey Blue #647D8E ΔE 0.018
- Slate Gray #708090 ΔE 0.018
- Steel #738595 ΔE 0.026
- Medium Grey #7D7F7C ΔE 0.035
- Light Slate Gray #778899 ΔE 0.036
- Gray #808080 ΔE 0.036
Use #66828A 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.