#636A4E
Closest named color: Dark Moss Green (#606C38). oklch(51% 0.043 119.4), rgb(99, 106, 78).
Aa
White text reads best on this color (5.67:1).
About this color
#636A4E is a medium-dark, muted yellow. In OKLCH its lightness is 51%, its chroma 0.043 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.033 away. White text reads best on it, at 5.67:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #636A4E |
| RGB | rgb(99, 106, 78) |
| HSL | hsl(75, 15%, 36%) |
| OKLCH | oklch(51% 0.043 119.4) |
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 #636A4E | 5.67:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #636A4E | 3.70:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #636A4E text on white | 5.67:1 | AA | Lc 78.4 | Fine for body text |
| #636A4E text on black | 3.70:1 | AA large text | Lc -23.4 | 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 700.
-
Step 50
50
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE6
oklch(93.5% 0.005 117.9)
-
Step 200
200
#D8DAD2
oklch(88.5% 0.011 118)
-
Step 300
300
#BFC3B4
oklch(81% 0.021 119)
-
Step 400
400
#9EA48D
oklch(70.7% 0.033 119.1)
-
Step 500
500
#868E71
oklch(63.2% 0.043 120.2)
-
Step 600
600
#707859
oklch(55.7% 0.047 119.7)
-
Step 700
700 (this color)
#636A4E
oklch(51% 0.043 119.4)
-
Step 800
800
#4C523C
oklch(42.7% 0.036 120.3)
-
Step 900
900
#404433
oklch(37.8% 0.028 118.5)
-
Step 950
950
#25281E
oklch(27% 0.018 121.2)
#636A4E 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) | #6E674C | 0.018 |
| Deuteranopia (no green cones) | #6D674F | 0.018 |
| Tritanopia (no blue cones) | #666762 | 0.035 |
| Achromatopsia (no color) | #676767 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636A4E
#636A4E
oklch(51% 0.043 119.4)
- #69617C
#69617C
oklch(51% 0.043 298.4)
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 #636A4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.033
- Dim Gray #696969 ΔE 0.044
- Dark Taupe #7F684E ΔE 0.045
- Dark Olive Green #556B2F ΔE 0.049
- Grey Brown #7F7053 ΔE 0.050
- Dirt Brown #836539 ΔE 0.053
- Muddy Green #657432 ΔE 0.054
- Dull Brown #876E4B ΔE 0.060
Use #636A4E 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.