#647271
Closest named color: Battleship Gray (#6C757D). oklch(54% 0.017 191.4), rgb(100, 114, 113).
Aa
White text reads best on this color (5.01:1).
About this color
#647271 is a medium-dark close to neutral grey. In OKLCH its lightness is 54%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.023 away. White text reads best on it, at 5.01:1.
| Hue family | Neutrals |
| Lightness | medium-dark (54%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #647271 |
| RGB | rgb(100, 114, 113) |
| HSL | hsl(176, 7%, 42%) |
| OKLCH | oklch(54% 0.017 191.4) |
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 #647271 | 5.01:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #647271 | 4.18:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #647271 text on white | 5.01:1 | AA | Lc 74.7 | Content text, not long reading |
| #647271 text on black | 4.18:1 | AA large text | Lc -27.0 | Dividers and decoration only |
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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DADA
oklch(88.5% 0.004 197.1)
-
Step 300
300
#BBC2C2
oklch(80.9% 0.008 197)
-
Step 400
400
#98A3A2
oklch(70.6% 0.013 190.3)
-
Step 500
500
#7F8D8C
oklch(63.2% 0.016 191.5)
-
Step 600
600 (this color)
#647271
oklch(54% 0.017 191.4)
-
Step 700
700
#576463
oklch(49.2% 0.016 191)
-
Step 800
800
#475151
oklch(42.6% 0.013 196.7)
-
Step 900
900
#3C4343
oklch(37.6% 0.009 196.8)
-
Step 950
950
#232727
oklch(26.9% 0.006 196.8)
#647271 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) | #707071 | 0.018 |
| Deuteranopia (no green cones) | #6D6E71 | 0.017 |
| Tritanopia (no blue cones) | #607372 | 0.006 |
| Achromatopsia (no color) | #6F6F6F | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647271
#647271
oklch(54% 0.017 191.4)
- #786B6C
#786B6C
oklch(54% 0.016 12.4)
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 #647271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.023
- Dim Gray #696969 ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.039
- Grey Blue #647D8E ΔE 0.047
- Metallic Blue #4F738E ΔE 0.050
- Slate #516572 ΔE 0.051
- Grey Brown #7F7053 ΔE 0.055
- Medium Grey #7D7F7C ΔE 0.056
Use #647271 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.