#66828E
Closest named color: Steel Grey (#6F828A). oklch(58.9% 0.037 225.9), rgb(102, 130, 142).
Aa
Black text reads best on this color (5.14:1).
About this color
#66828E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.037 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.013 away. Black text reads best on it, at 5.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.14:1 |
| White text | 4.07:1 |
Values
| HEX | #66828E |
| RGB | rgb(102, 130, 142) |
| HSL | hsl(198, 16%, 48%) |
| OKLCH | oklch(58.9% 0.037 225.9) |
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 #66828E | 4.07:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #66828E | 5.14:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #66828E text on white | 4.07:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #66828E text on black | 5.14:1 | AA | Lc -33.7 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3C9
oklch(80.9% 0.017 227)
-
Step 400
400
#90A4AD
oklch(70.6% 0.026 226.6)
-
Step 500
500
#748E99
oklch(63% 0.034 225.4)
-
Step 600
600 (this color)
#66828E
oklch(58.9% 0.037 225.9)
-
Step 700
700
#4C6570
oklch(49.1% 0.035 226.7)
-
Step 800
800
#3E525B
oklch(42.5% 0.029 227.2)
-
Step 900
900
#35444B
oklch(37.6% 0.023 228)
-
Step 950
950
#1F282C
oklch(27% 0.015 226.6)
#66828E 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) | #7B808F | 0.029 |
| Deuteranopia (no green cones) | #757C8E | 0.025 |
| Tritanopia (no blue cones) | #5A8686 | 0.025 |
| Achromatopsia (no color) | #7E7E7E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66828E
#66828E
oklch(58.9% 0.037 225.9)
- #90776B
#90776B
oklch(59% 0.036 47.1)
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 #66828E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.013
- Slate Gray #708090 ΔE 0.015
- Grey Blue #647D8E ΔE 0.015
- Battleship Grey #6B7C85 ΔE 0.019
- Steel #738595 ΔE 0.022
- Light Slate Gray #778899 ΔE 0.033
- Medium Grey #7D7F7C ΔE 0.038
- Gray #808080 ΔE 0.038
Use #66828E 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.