#6B8183
Closest named color: Steel Grey (#6F828A). oklch(58.6% 0.026 203.2), rgb(107, 129, 131).
Aa
Black text reads best on this color (5.09:1).
About this color
#6B8183 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 0.012 away. Black text reads best on it, at 5.09:1.
| Hue family | Neutrals |
| Lightness | medium-dark (59%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #6B8183 |
| RGB | rgb(107, 129, 131) |
| HSL | hsl(185, 10%, 47%) |
| OKLCH | oklch(58.6% 0.026 203.2) |
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 #6B8183 | 4.12:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #6B8183 | 5.09:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #6B8183 text on white | 4.12:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #6B8183 text on black | 5.09:1 | AA | Lc -33.3 | 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
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADB
oklch(88.4% 0.007 208.8)
-
Step 300
300
#B8C3C4
oklch(80.9% 0.012 203.4)
-
Step 400
400
#94A4A6
oklch(70.7% 0.018 205.8)
-
Step 500
500
#798E90
oklch(63.1% 0.024 203.6)
-
Step 600
600 (this color)
#6B8183
oklch(58.6% 0.026 203.2)
-
Step 700
700
#516567
oklch(49.1% 0.024 203.9)
-
Step 800
800
#435254
oklch(42.6% 0.019 206.4)
-
Step 900
900
#384445
oklch(37.6% 0.016 202.7)
-
Step 950
950
#212829
oklch(27% 0.01 207.1)
#6B8183 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) | #7E7F83 | 0.027 |
| Deuteranopia (no green cones) | #797B83 | 0.025 |
| Tritanopia (no blue cones) | #648382 | 0.011 |
| Achromatopsia (no color) | #7D7D7D | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B8183
#6B8183
oklch(58.6% 0.026 203.2)
- #8B7775
#8B7775
oklch(58.7% 0.025 24.7)
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 #6B8183, 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 0.016
- Slate Gray #708090 ΔE 0.023
- Medium Grey #7D7F7C ΔE 0.025
- Grey Blue #647D8E ΔE 0.025
- Gray #808080 ΔE 0.029
- Steel #738595 ΔE 0.030
- Battleship Gray #6C757D ΔE 0.034
Use #6B8183 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.