#638533
Closest named color: Swamp (#698339). oklch(57.3% 0.117 128.6), rgb(99, 133, 51).
Aa
Black text reads best on this color (4.93:1).
About this color
#638533 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.117 and its hue 129°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Swamp (#698339), ΔE 0.013 away. Black text reads best on it, at 4.93:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Swamp (#698339) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #638533 |
| RGB | rgb(99, 133, 51) |
| HSL | hsl(85, 45%, 36%) |
| OKLCH | oklch(57.3% 0.117 128.6) |
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 #638533 | 4.25:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #638533 | 4.93:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #638533 text on white | 4.25:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #638533 text on black | 4.93:1 | AA | Lc -32.4 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E7ECE1
oklch(93.6% 0.016 126.8)
-
Step 200
200
#D3DDC9
oklch(88.4% 0.029 128.8)
-
Step 300
300
#B6C8A4
oklch(80.9% 0.053 129.2)
-
Step 400
400
#91AB72
oklch(70.7% 0.084 128.3)
-
Step 500
500
#76964C
oklch(63.1% 0.108 128.4)
-
Step 600
600 (this color)
#638533
oklch(57.3% 0.117 128.6)
-
Step 700
700
#4E6C20
oklch(49.1% 0.109 128.4)
-
Step 800
800
#40581D
oklch(42.7% 0.09 128.5)
-
Step 900
900
#36491D
oklch(37.8% 0.072 128.8)
-
Step 950
950
#202B12
oklch(27.1% 0.045 128.6)
#638533 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) | #8B7C2A | 0.059 |
| Deuteranopia (no green cones) | #867A39 | 0.060 |
| Tritanopia (no blue cones) | #667F73 | 0.092 |
| Achromatopsia (no color) | #7B7B7B | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638533
#638533
oklch(57.3% 0.117 128.6)
- #8C64AD
#8C64AD
oklch(57.4% 0.117 308.3)
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 #638533, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Swamp #698339 ΔE 0.013
- Moss Green #658B38 ΔE 0.018
- Khaki Green #728639 ΔE 0.022
- Mossy Green #638B27 ΔE 0.023
- Fern Green #548D44 ΔE 0.026
- Swamp Green #748500 ΔE 0.031
- Military Green #667C3E ΔE 0.033
- Sap Green #5C8B15 ΔE 0.033
Use #638533 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.