#638A67
Closest named color: Slate Green (#658D6D). oklch(59.4% 0.068 147.3), rgb(99, 138, 103).
Aa
Black text reads best on this color (5.36:1).
About this color
#638A67 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.068 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.011 away. Black text reads best on it, at 5.36:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.36:1 |
| White text | 3.91:1 |
Values
| HEX | #638A67 |
| RGB | rgb(99, 138, 103) |
| HSL | hsl(126, 16%, 46%) |
| OKLCH | oklch(59.4% 0.068 147.3) |
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 #638A67 | 3.91:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #638A67 | 5.36:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #638A67 text on white | 3.91:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #638A67 text on black | 5.36:1 | AA | Lc -35.1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6ECE6
oklch(93.7% 0.01 145.5)
-
Step 200
200
#D1DDD2
oklch(88.5% 0.02 147.8)
-
Step 300
300
#B3C7B4
oklch(80.9% 0.034 146.6)
-
Step 400
400
#8BAA8E
oklch(70.7% 0.053 147.6)
-
Step 500
500 (this color)
#638A67
oklch(59.4% 0.068 147.3)
-
Step 600
600
#557F5A
oklch(55.5% 0.074 147.5)
-
Step 700
700
#456C4A
oklch(49.2% 0.07 147.6)
-
Step 800
800
#39583D
oklch(42.8% 0.058 147.7)
-
Step 900
900
#314834
oklch(37.6% 0.044 148)
-
Step 950
950
#1D2A1E
oklch(26.9% 0.028 146.7)
#638A67 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) | #8B8365 | 0.056 |
| Deuteranopia (no green cones) | #857F69 | 0.055 |
| Tritanopia (no blue cones) | #5E8880 | 0.039 |
| Achromatopsia (no color) | #818181 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638A67
#638A67
oklch(59.4% 0.068 147.3)
- #957094
#957094
oklch(59.4% 0.069 327.3)
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 #638A67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.011
- Dark Sage #598556 ΔE 0.029
- Green Grey #77926F ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.046
- Ocean Green #3D9973 ΔE 0.049
- Camo #7F8F4E ΔE 0.051
- Drab #828344 ΔE 0.052
Use #638A67 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.