#637C3D
Closest named color: Military Green (#667C3E). oklch(55.1% 0.094 127.1), rgb(99, 124, 61).
Aa
White text reads best on this color (4.68:1).
About this color
#637C3D is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.094 and its hue 127°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.004 away. White text reads best on it, at 4.68:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #637C3D |
| RGB | rgb(99, 124, 61) |
| HSL | hsl(84, 34%, 36%) |
| OKLCH | oklch(55.1% 0.094 127.1) |
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 #637C3D | 4.68:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #637C3D | 4.48:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #637C3D text on white | 4.68:1 | AA | Lc 72.5 | Content text, not long reading |
| #637C3D text on black | 4.48:1 | AA large text | Lc -29.2 | 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
#E7EBE3
oklch(93.5% 0.011 128.6)
-
Step 200
200
#D5DCCC
oklch(88.5% 0.023 126.3)
-
Step 300
300
#B9C6A9
oklch(80.9% 0.042 127)
-
Step 400
400
#95A97B
oklch(70.7% 0.068 127.2)
-
Step 500
500
#7B9359
oklch(63% 0.086 127)
-
Step 600
600 (this color)
#637C3D
oklch(55.1% 0.094 127.1)
-
Step 700
700
#536A30
oklch(49.2% 0.088 127.3)
-
Step 800
800
#445629
oklch(42.6% 0.072 127.1)
-
Step 900
900
#394725
oklch(37.6% 0.057 127.2)
-
Step 950
950
#222A16
oklch(27.1% 0.037 126.5)
#637C3D 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) | #827538 | 0.047 |
| Deuteranopia (no green cones) | #7E7341 | 0.048 |
| Tritanopia (no blue cones) | #66776D | 0.074 |
| Achromatopsia (no color) | #747474 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637C3D
#637C3D
oklch(55.1% 0.094 127.1)
- #80639D
#80639D
oklch(55.2% 0.093 306.5)
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 #637C3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.004
- Muddy Green #657432 ΔE 0.023
- Swamp #698339 ΔE 0.025
- Dark Sage #598556 ΔE 0.033
- Murky Green #6C7A0E ΔE 0.034
- Olive Green #677A04 ΔE 0.037
- Khaki Green #728639 ΔE 0.039
- Moss Green #658B38 ΔE 0.047
Use #637C3D 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.