#638768
Closest named color: Slate Green (#658D6D). oklch(58.7% 0.062 148.4), rgb(99, 135, 104).
Aa
Black text reads best on this color (5.19:1).
About this color
#638768 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.062 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.018 away. Black text reads best on it, at 5.19:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #638768 |
| RGB | rgb(99, 135, 104) |
| HSL | hsl(128, 15%, 46%) |
| OKLCH | oklch(58.7% 0.062 148.4) |
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 #638768 | 4.04:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #638768 | 5.19:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #638768 text on white | 4.04:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #638768 text on black | 5.19:1 | AA | Lc -34.0 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D3DCD3
oklch(88.5% 0.016 145.4)
-
Step 300
300
#B5C6B7
oklch(80.9% 0.028 148.8)
-
Step 400
400
#8EA991
oklch(70.7% 0.046 148.2)
-
Step 500
500
#729376
oklch(63% 0.057 148.1)
-
Step 600
600 (this color)
#638768
oklch(58.7% 0.062 148.4)
-
Step 700
700
#4A6A4E
oklch(49.1% 0.058 147.9)
-
Step 800
800
#3D5640
oklch(42.6% 0.047 147.8)
-
Step 900
900
#344737
oklch(37.7% 0.036 149.1)
-
Step 950
950
#1F2A20
oklch(27.1% 0.024 147.3)
#638768 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) | #888166 | 0.052 |
| Deuteranopia (no green cones) | #827D6A | 0.051 |
| Tritanopia (no blue cones) | #5F857E | 0.035 |
| Achromatopsia (no color) | #7E7E7E | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638768
#638768
oklch(58.7% 0.062 148.4)
- #916F8F
#916F8F
oklch(58.6% 0.063 328.3)
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 #638768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.018
- Dark Sage #598556 ΔE 0.029
- Green Grey #77926F ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.044
- Light Forest Green #4F9153 ΔE 0.054
- Military Green #667C3E ΔE 0.054
- Drab #828344 ΔE 0.054
- Swamp #698339 ΔE 0.056
Use #638768 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.