#639970
Closest named color: Green Grey (#77926F). oklch(63.4% 0.084 151), rgb(99, 153, 112).
Aa
Black text reads best on this color (6.32:1).
About this color
#639970 is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.084 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Grey (#77926F), ΔE 0.029 away. Black text reads best on it, at 6.32:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Green Grey (#77926F) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #639970 |
| RGB | rgb(99, 153, 112) |
| HSL | hsl(134, 21%, 49%) |
| OKLCH | oklch(63.4% 0.084 151) |
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 #639970 | 3.32:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #639970 | 6.32:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #639970 text on white | 3.32:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #639970 text on black | 6.32:1 | AA | Lc -41.2 | 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 500.
-
Step 50
50
#F3F6F3
oklch(97% 0.005 145.5)
-
Step 100
100
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CFDED2
oklch(88.6% 0.023 151.6)
-
Step 300
300
#AEC9B3
oklch(81% 0.042 150.7)
-
Step 400
400
#83AD8C
oklch(70.8% 0.066 151)
-
Step 500
500 (this color)
#639970
oklch(63.4% 0.084 151)
-
Step 600
600
#488357
oklch(55.7% 0.092 150.7)
-
Step 700
700
#396E47
oklch(49% 0.085 150.8)
-
Step 800
800
#2F5A3B
oklch(42.7% 0.071 151.4)
-
Step 900
900
#2B4A32
oklch(37.7% 0.055 150.3)
-
Step 950
950
#192B1E
oklch(26.9% 0.034 152.4)
#639970 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) | #9A906E | 0.074 |
| Deuteranopia (no green cones) | #918B72 | 0.070 |
| Tritanopia (no blue cones) | #5A978E | 0.046 |
| Achromatopsia (no color) | #8D8D8D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #639970
#639970
oklch(63.4% 0.084 151)
- #A877A2
#A877A2
oklch(63.3% 0.085 330.8)
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 #639970, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Grey #77926F ΔE 0.029
- Ocean Green #3D9973 ΔE 0.033
- Slate Green #658D6D ΔE 0.035
- Moss #769958 ΔE 0.035
- Grey Teal #5E9B8A ΔE 0.036
- Drab Green #749551 ΔE 0.038
- Greeny Grey #7EA07A ΔE 0.042
- Dull Teal #5F9E8F ΔE 0.042
Use #639970 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.