#637D2F
Closest named color: Military Green (#667C3E). oklch(55.2% 0.109 125.4), rgb(99, 125, 47).
Aa
White text reads best on this color (4.66:1).
About this color
#637D2F is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.109 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.018 away. White text reads best on it, at 4.66:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.50:1 |
| White text | 4.66:1 |
Values
| HEX | #637D2F |
| RGB | rgb(99, 125, 47) |
| HSL | hsl(80, 45%, 34%) |
| OKLCH | oklch(55.2% 0.109 125.4) |
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 #637D2F | 4.66:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #637D2F | 4.50:1 | AA | Lc 31.8 | Non-text elements, placeholder text |
| #637D2F text on white | 4.66:1 | AA | Lc 72.3 | Content text, not long reading |
| #637D2F text on black | 4.50:1 | AA | Lc -29.4 | 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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E7ECE2
oklch(93.7% 0.014 128.6)
-
Step 200
200
#D5DDC9
oklch(88.6% 0.028 124.8)
-
Step 300
300
#B9C7A4
oklch(81% 0.05 125.3)
-
Step 400
400
#95AA73
oklch(70.8% 0.08 125.4)
-
Step 500
500
#7B944E
oklch(63.1% 0.1 125.3)
-
Step 600
600 (this color)
#637D2F
oklch(55.2% 0.109 125.4)
-
Step 700
700
#536A23
oklch(49% 0.101 125.3)
-
Step 800
800
#44571F
oklch(42.8% 0.084 125.6)
-
Step 900
900
#39481F
oklch(37.8% 0.066 126)
-
Step 950
950
#222A13
oklch(27% 0.041 124.8)
#637D2F 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) | #847526 | 0.051 |
| Deuteranopia (no green cones) | #807434 | 0.050 |
| Tritanopia (no blue cones) | #67776C | 0.088 |
| Achromatopsia (no color) | #747474 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637D2F
#637D2F
oklch(55.2% 0.109 125.4)
- #8160A5
#8160A5
oklch(55.1% 0.11 305.1)
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 #637D2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.018
- Murky Green #6C7A0E ΔE 0.021
- Swamp #698339 ΔE 0.021
- Olive Green #677A04 ΔE 0.023
- Muddy Green #657432 ΔE 0.028
- Khaki Green #728639 ΔE 0.036
- Moss Green #658B38 ΔE 0.040
- Dark Sage #598556 ΔE 0.043
Use #637D2F 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.