#63756B
Closest named color: Battleship Gray (#6C757D). oklch(54.5% 0.026 161.1), rgb(99, 117, 107).
Aa
White text reads best on this color (4.89:1).
About this color
#63756B is a medium-dark close to neutral grey. In OKLCH its lightness is 54%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.032 away. White text reads best on it, at 4.89:1.
| Hue family | Neutrals |
| Lightness | medium-dark (54%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.28:1 |
| White text | 4.89:1 |
Values
| HEX | #63756B |
| RGB | rgb(99, 117, 107) |
| HSL | hsl(147, 8%, 42%) |
| OKLCH | oklch(54.5% 0.026 161.1) |
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 #63756B | 4.89:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #63756B | 4.28:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #63756B text on white | 4.89:1 | AA | Lc 74.0 | Content text, not long reading |
| #63756B text on black | 4.28:1 | AA large text | Lc -27.8 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D5DAD8
oklch(88.4% 0.006 170.4)
-
Step 300
300
#BAC3BE
oklch(80.9% 0.012 162)
-
Step 400
400
#97A49D
oklch(70.6% 0.018 162.5)
-
Step 500
500
#7D8E85
oklch(63% 0.024 162.7)
-
Step 600
600 (this color)
#63756B
oklch(54.5% 0.026 161.1)
-
Step 700
700
#55655C
oklch(49% 0.024 160.8)
-
Step 800
800
#46534B
oklch(42.8% 0.021 158.4)
-
Step 900
900
#3A443F
oklch(37.6% 0.016 164)
-
Step 950
950
#222825
oklch(27% 0.01 164.1)
#63756B 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) | #74726B | 0.025 |
| Deuteranopia (no green cones) | #71706C | 0.024 |
| Tritanopia (no blue cones) | #607572 | 0.011 |
| Achromatopsia (no color) | #717171 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63756B
#63756B
oklch(54.5% 0.026 161.1)
- #7B6A75
#7B6A75
oklch(54.4% 0.027 339.1)
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 #63756B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.032
- Dim Gray #696969 ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.043
- Grey Brown #7F7053 ΔE 0.048
- Grey Blue #647D8E ΔE 0.053
- Medium Grey #7D7F7C ΔE 0.054
- Dark Taupe #7F684E ΔE 0.057
- Steel Grey #6F828A ΔE 0.057
Use #63756B 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.