#637367
Closest named color: Dim Gray (#696969). oklch(53.9% 0.027 153), rgb(99, 115, 103).
Aa
White text reads best on this color (5.02:1).
About this color
#637367 is a medium-dark close to neutral grey. In OKLCH its lightness is 54%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.032 away. White text reads best on it, at 5.02:1.
| Hue family | Neutrals |
| Lightness | medium-dark (54%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 4.17:1 |
| White text | 5.02:1 |
Values
| HEX | #637367 |
| RGB | rgb(99, 115, 103) |
| HSL | hsl(135, 7%, 42%) |
| OKLCH | oklch(53.9% 0.027 153) |
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 #637367 | 5.02:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #637367 | 4.17:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #637367 text on white | 5.02:1 | AA | Lc 74.8 | Content text, not long reading |
| #637367 text on black | 4.17:1 | 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
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D6DAD7
oklch(88.4% 0.006 153.8)
-
Step 300
300
#BBC3BD
oklch(80.9% 0.012 153.6)
-
Step 400
400
#98A49B
oklch(70.6% 0.019 153.4)
-
Step 500
500
#7F8E83
oklch(63.1% 0.024 153.8)
-
Step 600
600 (this color)
#637367
oklch(53.9% 0.027 153)
-
Step 700
700
#56655A
oklch(49.1% 0.025 153.6)
-
Step 800
800
#47524A
oklch(42.6% 0.019 153.9)
-
Step 900
900
#3B443E
oklch(37.6% 0.016 156.4)
-
Step 950
950
#232824
oklch(27% 0.01 151.4)
#637367 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) | #737066 | 0.024 |
| Deuteranopia (no green cones) | #706E68 | 0.024 |
| Tritanopia (no blue cones) | #61726F | 0.014 |
| Achromatopsia (no color) | #6F6F6F | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637367
#637367
oklch(53.9% 0.027 153)
- #786975
#786975
oklch(53.9% 0.026 332.7)
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 #637367, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.032
- Battleship Gray #6C757D ΔE 0.037
- Grey Brown #7F7053 ΔE 0.046
- Battleship Grey #6B7C85 ΔE 0.049
- Dark Taupe #7F684E ΔE 0.053
- Slate #516572 ΔE 0.058
- Grey Blue #647D8E ΔE 0.059
- Medium Grey #7D7F7C ΔE 0.059
Use #637367 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.