#637E48
Closest named color: Military Green (#667C3E). oklch(55.8% 0.084 130.4), rgb(99, 126, 72).
Aa
Black text reads best on this color (4.60:1).
About this color
#637E48 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.084 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.011 away. Black text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.60:1 |
| White text | 4.55:1 |
Values
| HEX | #637E48 |
| RGB | rgb(99, 126, 72) |
| HSL | hsl(90, 27%, 39%) |
| OKLCH | oklch(55.8% 0.084 130.4) |
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 #637E48 | 4.55:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #637E48 | 4.60:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #637E48 text on white | 4.55:1 | AA | Lc 71.6 | Content text, not long reading |
| #637E48 text on black | 4.60:1 | AA | Lc -30.1 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE4
oklch(93.5% 0.01 131.4)
-
Step 200
200
#D4DCCE
oklch(88.4% 0.021 131.5)
-
Step 300
300
#B8C6AD
oklch(80.9% 0.038 131.3)
-
Step 400
400
#94A981
oklch(70.8% 0.061 130.4)
-
Step 500
500
#7A9361
oklch(63.1% 0.077 130)
-
Step 600
600 (this color)
#637E48
oklch(55.8% 0.084 130.4)
-
Step 700
700
#516A39
oklch(49.2% 0.079 130.9)
-
Step 800
800
#43562F
oklch(42.7% 0.065 130)
-
Step 900
900
#38472A
oklch(37.6% 0.051 130.7)
-
Step 950
950
#212A19
oklch(27.1% 0.033 131)
#637E48 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) | #837744 | 0.048 |
| Deuteranopia (no green cones) | #7F754B | 0.048 |
| Tritanopia (no blue cones) | #657A71 | 0.064 |
| Achromatopsia (no color) | #767676 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637E48
#637E48
oklch(55.8% 0.084 130.4)
- #836699
#836699
oklch(55.8% 0.084 309.8)
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 #637E48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.011
- Dark Sage #598556 ΔE 0.023
- Swamp #698339 ΔE 0.027
- Muddy Green #657432 ΔE 0.032
- Khaki Green #728639 ΔE 0.039
- Murky Green #6C7A0E ΔE 0.045
- Drab #828344 ΔE 0.048
- Moss Green #658B38 ΔE 0.048
Use #637E48 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.