#677B7B
Closest named color: Battleship Grey (#6B7C85). oklch(56.7% 0.023 196.5), rgb(103, 123, 123).
Aa
Black text reads best on this color (4.69:1).
About this color
#677B7B is a medium-dark close to neutral grey. In OKLCH its lightness is 57%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.017 away. Black text reads best on it, at 4.69:1.
| Hue family | Neutrals |
| Lightness | medium-dark (57%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #677B7B |
| RGB | rgb(103, 123, 123) |
| HSL | hsl(180, 9%, 44%) |
| OKLCH | oklch(56.7% 0.023 196.5) |
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 #677B7B | 4.47:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #677B7B | 4.69:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #677B7B text on white | 4.47:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #677B7B text on black | 4.69:1 | AA | Lc -30.6 | 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
#E8EAEA
oklch(93.6% 0.002 197.1)
-
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
#95A4A4
oklch(70.7% 0.017 196.8)
-
Step 500
500
#7B8E8E
oklch(63.2% 0.022 196.6)
-
Step 600
600 (this color)
#677B7B
oklch(56.7% 0.023 196.5)
-
Step 700
700
#536565
oklch(49.2% 0.022 196.5)
-
Step 800
800
#445252
oklch(42.7% 0.018 196.5)
-
Step 900
900
#394444
oklch(37.7% 0.014 196.6)
-
Step 950
950
#222828
oklch(27.1% 0.009 196.7)
#677B7B 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) | #78797B | 0.024 |
| Deuteranopia (no green cones) | #74767B | 0.022 |
| Tritanopia (no blue cones) | #617C7B | 0.008 |
| Achromatopsia (no color) | #777777 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677B7B
#677B7B
oklch(56.7% 0.023 196.5)
- #847172
#847172
oklch(56.7% 0.024 14.3)
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 #677B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.017
- Battleship Gray #6C757D ΔE 0.020
- Grey Blue #647D8E ΔE 0.028
- Steel Grey #6F828A ΔE 0.030
- Medium Grey #7D7F7C ΔE 0.035
- Slate Gray #708090 ΔE 0.036
- Gray #808080 ΔE 0.041
- Steel #738595 ΔE 0.048
Use #677B7B 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.