#677B70
Closest named color: Battleship Gray (#6C757D). oklch(56.3% 0.029 161.3), rgb(103, 123, 112).
Aa
Black text reads best on this color (4.64:1).
About this color
#677B70 is a medium-dark close to neutral grey. In OKLCH its lightness is 56%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.032 away. Black text reads best on it, at 4.64:1.
| Hue family | Neutrals |
| Lightness | medium-dark (56%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #677B70 |
| RGB | rgb(103, 123, 112) |
| HSL | hsl(147, 9%, 44%) |
| OKLCH | oklch(56.3% 0.029 161.3) |
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 #677B70 | 4.52:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #677B70 | 4.64:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #677B70 text on white | 4.52:1 | AA | Lc 71.4 | Content text, not long reading |
| #677B70 text on black | 4.64:1 | AA | Lc -30.3 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EBE9
oklch(93.7% 0.004 157.2)
-
Step 200
200
#D5DBD7
oklch(88.6% 0.008 157.1)
-
Step 300
300
#BAC3BE
oklch(80.9% 0.012 162)
-
Step 400
400
#96A59C
oklch(70.7% 0.021 159.5)
-
Step 500
500
#7C8F84
oklch(63.2% 0.027 160.2)
-
Step 600
600 (this color)
#677B70
oklch(56.3% 0.029 161.3)
-
Step 700
700
#54665C
oklch(49.2% 0.027 160.9)
-
Step 800
800
#45534B
oklch(42.7% 0.022 160.3)
-
Step 900
900
#3A453F
oklch(37.8% 0.018 161.6)
-
Step 950
950
#222825
oklch(27% 0.01 164.1)
#677B70 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) | #7A786F | 0.027 |
| Deuteranopia (no green cones) | #777571 | 0.028 |
| Tritanopia (no blue cones) | #647B78 | 0.012 |
| Achromatopsia (no color) | #767676 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677B70
#677B70
oklch(56.3% 0.029 161.3)
- #826F7A
#826F7A
oklch(56.3% 0.029 342.4)
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 #677B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.032
- Battleship Grey #6B7C85 ΔE 0.033
- Medium Grey #7D7F7C ΔE 0.039
- Steel Grey #6F828A ΔE 0.042
- Grey Blue #647D8E ΔE 0.045
- Gray #808080 ΔE 0.047
- Grey Brown #7F7053 ΔE 0.050
- Slate Gray #708090 ΔE 0.051
Use #677B70 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.