#677C7D
Closest named color: Battleship Grey (#6B7C85). oklch(57% 0.025 200), rgb(103, 124, 125).
Aa
Black text reads best on this color (4.75:1).
About this color
#677C7D is a medium-dark close to neutral grey. In OKLCH its lightness is 57%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.014 away. Black text reads best on it, at 4.75:1.
| Hue family | Neutrals |
| Lightness | medium-dark (57%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #677C7D |
| RGB | rgb(103, 124, 125) |
| HSL | hsl(183, 10%, 45%) |
| OKLCH | oklch(57% 0.025 200) |
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 #677C7D | 4.41:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #677C7D | 4.75:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #677C7D text on white | 4.41:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #677C7D text on black | 4.75:1 | AA | Lc -31.0 | 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
#D5DADB
oklch(88.5% 0.006 211)
-
Step 300
300
#B9C3C3
oklch(80.9% 0.011 196.9)
-
Step 400
400
#94A4A5
oklch(70.6% 0.018 201.3)
-
Step 500
500
#7A8E8F
oklch(63.1% 0.023 200.3)
-
Step 600
600 (this color)
#677C7D
oklch(57% 0.025 200)
-
Step 700
700
#526566
oklch(49.1% 0.023 200.4)
-
Step 800
800
#435253
oklch(42.6% 0.019 201.4)
-
Step 900
900
#394445
oklch(37.7% 0.014 203.3)
-
Step 950
950
#212828
oklch(27% 0.01 196.6)
#677C7D 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) | #797A7D | 0.025 |
| Deuteranopia (no green cones) | #75777D | 0.023 |
| Tritanopia (no blue cones) | #607E7C | 0.011 |
| Achromatopsia (no color) | #787878 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677C7D
#677C7D
oklch(57% 0.025 200)
- #857271
#857271
oklch(57% 0.024 21.5)
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 #677C7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.014
- Battleship Gray #6C757D ΔE 0.021
- Grey Blue #647D8E ΔE 0.026
- Steel Grey #6F828A ΔE 0.027
- Slate Gray #708090 ΔE 0.033
- Medium Grey #7D7F7C ΔE 0.033
- Gray #808080 ΔE 0.039
- Steel #738595 ΔE 0.044
Use #677C7D 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.