#6B8181
Closest named color: Steel Grey (#6F828A). oklch(58.6% 0.026 196.5), rgb(107, 129, 129).
Aa
Black text reads best on this color (5.08:1).
About this color
#6B8181 is a medium-dark close to neutral grey. In OKLCH its lightness is 59%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Steel Grey (#6F828A), ΔE 0.015 away. Black text reads best on it, at 5.08:1.
| Hue family | Neutrals |
| Lightness | medium-dark (59%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.08:1 |
| White text | 4.13:1 |
Values
| HEX | #6B8181 |
| RGB | rgb(107, 129, 129) |
| HSL | hsl(180, 9%, 46%) |
| OKLCH | oklch(58.6% 0.026 196.5) |
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 #6B8181 | 4.13:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #6B8181 | 5.08:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #6B8181 text on white | 4.13:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #6B8181 text on black | 5.08:1 | AA | Lc -33.2 | 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
#E7EAEA
oklch(93.5% 0.003 197.1)
-
Step 200
200
#D5DADA
oklch(88.5% 0.005 197.1)
-
Step 300
300
#B9C3C3
oklch(80.9% 0.011 196.9)
-
Step 400
400
#94A4A4
oklch(70.6% 0.018 196.8)
-
Step 500
500
#7A8E8E
oklch(63.1% 0.023 196.6)
-
Step 600
600 (this color)
#6B8181
oklch(58.6% 0.026 196.5)
-
Step 700
700
#516565
oklch(49% 0.024 196.4)
-
Step 800
800
#435253
oklch(42.6% 0.019 201.4)
-
Step 900
900
#384444
oklch(37.6% 0.016 196.5)
-
Step 950
950
#212828
oklch(27% 0.01 196.6)
#6B8181 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) | #7E7F81 | 0.027 |
| Deuteranopia (no green cones) | #797B81 | 0.025 |
| Tritanopia (no blue cones) | #648381 | 0.010 |
| Achromatopsia (no color) | #7D7D7D | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B8181
#6B8181
oklch(58.6% 0.026 196.5)
- #8B7677
#8B7677
oklch(58.6% 0.026 14.7)
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 #6B8181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.015
- Battleship Grey #6B7C85 ΔE 0.018
- Medium Grey #7D7F7C ΔE 0.025
- Slate Gray #708090 ΔE 0.026
- Grey Blue #647D8E ΔE 0.028
- Gray #808080 ΔE 0.029
- Steel #738595 ΔE 0.033
- Battleship Gray #6C757D ΔE 0.034
Use #6B8181 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.