#556259
Closest named color: Slate (#516572). oklch(48.2% 0.021 155.3), rgb(85, 98, 89).
Aa
White text reads best on this color (6.40:1).
About this color
#556259 is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.038 away. White text reads best on it, at 6.40:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #556259 |
| RGB | rgb(85, 98, 89) |
| HSL | hsl(138, 7%, 36%) |
| OKLCH | oklch(48.2% 0.021 155.3) |
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 #556259 | 6.40:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #556259 | 3.27:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #556259 text on white | 6.40:1 | AA | Lc 81.9 | Fine for body text |
| #556259 text on black | 3.27:1 | AA large text | Lc -20.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D6DAD7
oklch(88.4% 0.006 153.8)
-
Step 300
300
#BCC3BE
oklch(81% 0.01 155)
-
Step 400
400
#99A49C
oklch(70.8% 0.017 154.3)
-
Step 500
500
#808D84
oklch(63% 0.02 155.6)
-
Step 600
600
#69786E
oklch(55.7% 0.023 156.4)
-
Step 700
700 (this color)
#556259
oklch(48.2% 0.021 155.3)
-
Step 800
800
#48524B
oklch(42.7% 0.017 155.1)
-
Step 900
900
#3C443E
oklch(37.7% 0.015 153.2)
-
Step 950
950
#232825
oklch(27.1% 0.009 159.4)
#556259 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) | #626059 | 0.020 |
| Deuteranopia (no green cones) | #605E59 | 0.020 |
| Tritanopia (no blue cones) | #53625F | 0.010 |
| Achromatopsia (no color) | #5F5F5F | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556259
#556259
oklch(48.2% 0.021 155.3)
- #665A63
#665A63
oklch(48.2% 0.021 334.6)
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 #556259, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.038
- Dim Gray #696969 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.059
- Dusty Grape #545775 ΔE 0.065
- Dark Moss Green #606C38 ΔE 0.065
- Dark Aqua #05696B ΔE 0.066
- YInMn Blue #415A77 ΔE 0.067
- Dark Taupe #7F684E ΔE 0.072
Use #556259 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.