#637228
Closest named color: Muddy Green (#657432). oklch(52.4% 0.1 119.7), rgb(99, 114, 40).
Aa
White text reads best on this color (5.29:1).
About this color
#637228 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.100 and its hue 120°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.011 away. White text reads best on it, at 5.29:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #637228 |
| RGB | rgb(99, 114, 40) |
| HSL | hsl(72, 48%, 30%) |
| OKLCH | oklch(52.4% 0.1 119.7) |
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 #637228 | 5.29:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #637228 | 3.96:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #637228 text on white | 5.29:1 | AA | Lc 76.2 | Fine for body text |
| #637228 text on black | 3.96:1 | AA large text | Lc -25.5 | 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E8EBE2
oklch(93.5% 0.012 121.7)
-
Step 200
200
#D7DCCA
oklch(88.6% 0.025 119.5)
-
Step 300
300
#BDC5A5
oklch(80.9% 0.045 118.8)
-
Step 400
400
#9BA874
oklch(70.8% 0.073 119.7)
-
Step 500
500
#82924F
oklch(63.1% 0.093 120.2)
-
Step 600
600 (this color)
#637228
oklch(52.4% 0.1 119.7)
-
Step 700
700
#5A6825
oklch(49.1% 0.093 119.9)
-
Step 800
800
#4A5520
oklch(42.7% 0.077 119.6)
-
Step 900
900
#3E4620
oklch(37.7% 0.059 119.1)
-
Step 950
950
#242913
oklch(26.9% 0.038 119.5)
#637228 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) | #796C1F | 0.035 |
| Deuteranopia (no green cones) | #776C2D | 0.036 |
| Tritanopia (no blue cones) | #696C62 | 0.084 |
| Achromatopsia (no color) | #6B6B6B | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637228
#637228
oklch(52.4% 0.1 119.7)
- #735C9B
#735C9B
oklch(52.4% 0.1 299.8)
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 #637228, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.011
- Browny Green #6F6C0A ΔE 0.024
- Brown Green #706C11 ΔE 0.024
- Dark Moss Green #606C38 ΔE 0.029
- Dark Olive Green #556B2F ΔE 0.032
- Military Green #667C3E ΔE 0.033
- Murky Green #6C7A0E ΔE 0.034
- Olive Green #677A04 ΔE 0.035
Use #637228 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.