#638751
Closest named color: Dark Sage (#598556). oklch(58.2% 0.089 135.7), rgb(99, 135, 81).
Aa
Black text reads best on this color (5.11:1).
About this color
#638751 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.089 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.015 away. Black text reads best on it, at 5.11:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #638751 |
| RGB | rgb(99, 135, 81) |
| HSL | hsl(100, 25%, 42%) |
| OKLCH | oklch(58.2% 0.089 135.7) |
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 #638751 | 4.10:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #638751 | 5.11:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #638751 text on white | 4.10:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #638751 text on black | 5.11:1 | AA | Lc -33.5 | Non-text elements, placeholder text |
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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E6ECE4
oklch(93.6% 0.012 137.8)
-
Step 200
200
#D3DDCE
oklch(88.6% 0.023 135)
-
Step 300
300
#B5C7AD
oklch(80.9% 0.041 136)
-
Step 400
400
#8FAA82
oklch(70.7% 0.064 135.6)
-
Step 500
500
#739563
oklch(63.1% 0.082 136)
-
Step 600
600 (this color)
#638751
oklch(58.2% 0.089 135.7)
-
Step 700
700
#4B6B3B
oklch(49% 0.082 135.9)
-
Step 800
800
#3E5731
oklch(42.6% 0.067 135.5)
-
Step 900
900
#35482B
oklch(37.7% 0.053 135.3)
-
Step 950
950
#1F2A1A
oklch(26.9% 0.033 136.2)
#638751 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) | #8B7F4D | 0.058 |
| Deuteranopia (no green cones) | #857C54 | 0.057 |
| Tritanopia (no blue cones) | #62837A | 0.064 |
| Achromatopsia (no color) | #7D7D7D | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638751
#638751
oklch(58.2% 0.089 135.7)
- #8F6A9F
#8F6A9F
oklch(58.1% 0.09 315.4)
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 #638751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.015
- Swamp #698339 ΔE 0.026
- Khaki Green #728639 ΔE 0.029
- Military Green #667C3E ΔE 0.033
- Fern Green #548D44 ΔE 0.033
- Moss Green #658B38 ΔE 0.034
- Light Forest Green #4F9153 ΔE 0.034
- Slate Green #658D6D ΔE 0.037
Use #638751 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.