#647B28
Closest named color: Murky Green (#6C7A0E). oklch(54.7% 0.112 123.4), rgb(100, 123, 40).
Aa
White text reads best on this color (4.76:1).
About this color
#647B28 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 55%, its chroma 0.112 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Murky Green (#6C7A0E), ΔE 0.016 away. White text reads best on it, at 4.76:1.
| Hue family | Yellows |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Murky Green (#6C7A0E) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #647B28 |
| RGB | rgb(100, 123, 40) |
| HSL | hsl(77, 51%, 32%) |
| OKLCH | oklch(54.7% 0.112 123.4) |
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 #647B28 | 4.76:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #647B28 | 4.40:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #647B28 text on white | 4.76:1 | AA | Lc 73.0 | Content text, not long reading |
| #647B28 text on black | 4.40:1 | AA large text | Lc -28.7 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E8ECE1
oklch(93.7% 0.015 123)
-
Step 200
200
#D5DDC9
oklch(88.6% 0.028 124.8)
-
Step 300
300
#BAC7A3
oklch(81% 0.051 123.7)
-
Step 400
400
#97A971
oklch(70.7% 0.08 122.9)
-
Step 500
500
#7D944A
oklch(63.1% 0.104 123.6)
-
Step 600
600 (this color)
#647B28
oklch(54.7% 0.112 123.4)
-
Step 700
700
#556A1D
oklch(49.1% 0.105 123.5)
-
Step 800
800
#46561B
oklch(42.6% 0.085 123)
-
Step 900
900
#3B471C
oklch(37.6% 0.067 122.6)
-
Step 950
950
#222A11
oklch(27% 0.044 123.9)
#647B28 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) | #82731D | 0.047 |
| Deuteranopia (no green cones) | #7F732E | 0.047 |
| Tritanopia (no blue cones) | #69756A | 0.092 |
| Achromatopsia (no color) | #737373 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647B28
#647B28
oklch(54.7% 0.112 123.4)
- #7E5FA6
#7E5FA6
oklch(54.7% 0.112 303)
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 #647B28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Murky Green #6C7A0E ΔE 0.016
- Olive Green #677A04 ΔE 0.018
- Military Green #667C3E ΔE 0.022
- Muddy Green #657432 ΔE 0.026
- Swamp #698339 ΔE 0.027
- Khaki Green #728639 ΔE 0.041
- Browny Green #6F6C0A ΔE 0.042
- Brown Green #706C11 ΔE 0.043
Use #647B28 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.