#637769
Closest named color: Battleship Gray (#6C757D). oklch(54.9% 0.032 154.7), rgb(99, 119, 105).
Aa
White text reads best on this color (4.80:1).
About this color
#637769 is a medium-dark, muted green. In OKLCH its lightness is 55%, its chroma 0.032 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.037 away. White text reads best on it, at 4.80:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.37:1 |
| White text | 4.80:1 |
Values
| HEX | #637769 |
| RGB | rgb(99, 119, 105) |
| HSL | hsl(138, 9%, 43%) |
| OKLCH | oklch(54.9% 0.032 154.7) |
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 #637769 | 4.80:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #637769 | 4.37:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #637769 text on white | 4.80:1 | AA | Lc 73.3 | Content text, not long reading |
| #637769 text on black | 4.37:1 | AA large text | Lc -28.4 | 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
#E8EBE8
oklch(93.7% 0.005 145.5)
-
Step 200
200
#D5DBD7
oklch(88.6% 0.008 157.1)
-
Step 300
300
#BAC3BC
oklch(80.8% 0.014 152.5)
-
Step 400
400
#96A59A
oklch(70.7% 0.023 153.9)
-
Step 500
500
#7C8F82
oklch(63.1% 0.029 155.6)
-
Step 600
600 (this color)
#637769
oklch(54.9% 0.032 154.7)
-
Step 700
700
#546659
oklch(49.1% 0.03 153.8)
-
Step 800
800
#455349
oklch(42.7% 0.024 154.2)
-
Step 900
900
#3A453D
oklch(37.8% 0.02 153.8)
-
Step 950
950
#222824
oklch(26.9% 0.011 156.4)
#637769 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) | #777468 | 0.029 |
| Deuteranopia (no green cones) | #73716A | 0.028 |
| Tritanopia (no blue cones) | #607673 | 0.017 |
| Achromatopsia (no color) | #727272 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637769
#637769
oklch(54.9% 0.032 154.7)
- #7D6A79
#7D6A79
oklch(54.7% 0.033 333.3)
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 #637769, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.037
- Dim Gray #696969 ΔE 0.042
- Battleship Grey #6B7C85 ΔE 0.044
- Grey Brown #7F7053 ΔE 0.047
- Medium Grey #7D7F7C ΔE 0.053
- Grey Blue #647D8E ΔE 0.055
- Steel Grey #6F828A ΔE 0.056
- Dark Taupe #7F684E ΔE 0.058
Use #637769 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.