#638055
Closest named color: Dark Sage (#598556). oklch(56.6% 0.072 135.8), rgb(99, 128, 85).
Aa
Black text reads best on this color (4.74:1).
About this color
#638055 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.072 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 0.018 away. Black text reads best on it, at 4.74:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #638055 |
| RGB | rgb(99, 128, 85) |
| HSL | hsl(100, 20%, 42%) |
| OKLCH | oklch(56.6% 0.072 135.8) |
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 #638055 | 4.42:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #638055 | 4.74:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #638055 text on white | 4.42:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #638055 text on black | 4.74:1 | AA | Lc -31.0 | 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
#E7EBE5
oklch(93.5% 0.009 134.9)
-
Step 200
200
#D4DCD0
oklch(88.5% 0.018 134.9)
-
Step 300
300
#B8C6B1
oklch(81% 0.033 135)
-
Step 400
400
#92A888
oklch(70.6% 0.052 135.9)
-
Step 500
500
#78936B
oklch(63.1% 0.066 135.7)
-
Step 600
600 (this color)
#638055
oklch(56.6% 0.072 135.8)
-
Step 700
700
#4F6A43
oklch(49.2% 0.068 136.4)
-
Step 800
800
#415637
oklch(42.7% 0.056 135.9)
-
Step 900
900
#374730
oklch(37.7% 0.043 136.4)
-
Step 950
950
#202A1C
oklch(27.1% 0.029 136.9)
#638055 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) | #837A52 | 0.047 |
| Deuteranopia (no green cones) | #7F7757 | 0.047 |
| Tritanopia (no blue cones) | #637D75 | 0.051 |
| Achromatopsia (no color) | #787878 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638055
#638055
oklch(56.6% 0.072 135.8)
- #876993
#876993
oklch(56.6% 0.072 316.1)
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 #638055, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.018
- Military Green #667C3E ΔE 0.027
- Swamp #698339 ΔE 0.037
- Slate Green #658D6D ΔE 0.043
- Khaki Green #728639 ΔE 0.045
- Muddy Green #657432 ΔE 0.046
- Drab #828344 ΔE 0.048
- Fern Green #548D44 ΔE 0.053
Use #638055 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.