#637020
Closest named color: Muddy Green (#657432). oklch(51.8% 0.104 118.2), rgb(99, 112, 32).
Aa
White text reads best on this color (5.42:1).
About this color
#637020 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.104 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.018 away. White text reads best on it, at 5.42:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 3.86:1 |
| White text | 5.42:1 |
Values
| HEX | #637020 |
| RGB | rgb(99, 112, 32) |
| HSL | hsl(70, 56%, 28%) |
| OKLCH | oklch(51.8% 0.104 118.2) |
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 #637020 | 5.42:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #637020 | 3.86:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #637020 text on white | 5.42:1 | AA | Lc 77.0 | Fine for body text |
| #637020 text on black | 3.86:1 | AA large text | Lc -24.8 | 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 700.
-
Step 50
50
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D7DCC8
oklch(88.5% 0.027 118.4)
-
Step 300
300
#BDC6A1
oklch(81% 0.051 118.7)
-
Step 400
400
#9CA86E
oklch(70.8% 0.08 118)
-
Step 500
500
#849245
oklch(63.1% 0.103 118)
-
Step 600
600
#6E7C24
oklch(55.7% 0.112 118)
-
Step 700
700 (this color)
#637020
oklch(51.8% 0.104 118.2)
-
Step 800
800
#4B5516
oklch(42.7% 0.086 118)
-
Step 900
900
#3E4619
oklch(37.6% 0.067 118.2)
-
Step 950
950
#242910
oklch(26.9% 0.042 118.7)
#637020 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) | #786A14 | 0.034 |
| Deuteranopia (no green cones) | #766A26 | 0.035 |
| Tritanopia (no blue cones) | #696A60 | 0.089 |
| Achromatopsia (no color) | #6A6A6A | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637020
#637020
oklch(51.8% 0.104 118.2)
- #705A9C
#705A9C
oklch(51.8% 0.104 298)
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 #637020, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.018
- Browny Green #6F6C0A ΔE 0.020
- Brown Green #706C11 ΔE 0.021
- Dark Moss Green #606C38 ΔE 0.030
- Dark Olive Green #556B2F ΔE 0.030
- Mud Green #606602 ΔE 0.031
- Olive Green #677A04 ΔE 0.036
- Murky Green #6C7A0E ΔE 0.036
Use #637020 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.