#677F78
Closest named color: Battleship Grey (#6B7C85). oklch(57.5% 0.03 175.6), rgb(103, 127, 120).
Aa
Black text reads best on this color (4.88:1).
About this color
#677F78 is a medium-dark close to neutral grey. In OKLCH its lightness is 58%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.026 away. Black text reads best on it, at 4.88:1.
| Hue family | Neutrals |
| Lightness | medium-dark (58%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.88:1 |
| White text | 4.30:1 |
Values
| HEX | #677F78 |
| RGB | rgb(103, 127, 120) |
| HSL | hsl(162, 10%, 45%) |
| OKLCH | oklch(57.5% 0.03 175.6) |
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 #677F78 | 4.30:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #677F78 | 4.88:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #677F78 text on white | 4.30:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #677F78 text on black | 4.88:1 | AA | Lc -31.9 | 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
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBD9
oklch(88.5% 0.008 177.3)
-
Step 300
300
#B8C4C0
oklch(81% 0.014 174.1)
-
Step 400
400
#93A5A0
oklch(70.6% 0.021 177.2)
-
Step 500
500
#798F89
oklch(63.1% 0.027 177.1)
-
Step 600
600 (this color)
#677F78
oklch(57.5% 0.03 175.6)
-
Step 700
700
#516660
oklch(49.1% 0.027 175.9)
-
Step 800
800
#42534E
oklch(42.6% 0.023 175.4)
-
Step 900
900
#384541
oklch(37.7% 0.018 174.7)
-
Step 950
950
#212826
oklch(26.9% 0.011 176.4)
#677F78 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) | #7D7C78 | 0.031 |
| Deuteranopia (no green cones) | #797978 | 0.029 |
| Tritanopia (no blue cones) | #61807D | 0.010 |
| Achromatopsia (no color) | #7A7A7A | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677F78
#677F78
oklch(57.5% 0.03 175.6)
- #88727A
#88727A
oklch(57.5% 0.03 354.2)
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 #677F78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.026
- Steel Grey #6F828A ΔE 0.030
- Medium Grey #7D7F7C ΔE 0.032
- Battleship Gray #6C757D ΔE 0.034
- Grey Blue #647D8E ΔE 0.037
- Gray #808080 ΔE 0.039
- Slate Gray #708090 ΔE 0.040
- Steel #738595 ΔE 0.048
Use #677F78 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.