#555740
Closest named color: Olive Brown (#645403). oklch(44.8% 0.036 111.9), rgb(85, 87, 64).
Aa
White text reads best on this color (7.43:1).
About this color
#555740 is a dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.036 and its hue 112°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.057 away. White text reads best on it, at 7.43:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.82:1 |
| White text | 7.43:1 |
Values
| HEX | #555740 |
| RGB | rgb(85, 87, 64) |
| HSL | hsl(65, 15%, 30%) |
| OKLCH | oklch(44.8% 0.036 111.9) |
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 #555740 | 7.43:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #555740 | 2.82:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #555740 text on white | 7.43:1 | AAA | Lc 85.9 | Fine for body text |
| #555740 text on black | 2.82:1 | Fails | Lc -16.2 | 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 800.
-
Step 50
50
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#EAEAE6
oklch(93.6% 0.005 106.5)
-
Step 200
200
#D9DAD1
oklch(88.5% 0.012 111.8)
-
Step 300
300
#C1C2B3
oklch(80.9% 0.021 109.9)
-
Step 400
400
#A1A38B
oklch(70.7% 0.034 111.1)
-
Step 500
500
#8A8C6F
oklch(63% 0.042 110.8)
-
Step 600
600
#747657
oklch(55.6% 0.046 110.9)
-
Step 700
700
#616347
oklch(49% 0.042 111.3)
-
Step 800
800 (this color)
#555740
oklch(44.8% 0.036 111.9)
-
Step 900
900
#424332
oklch(37.7% 0.028 110.4)
-
Step 950
950
#26271D
oklch(26.8% 0.018 112.2)
#555740 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) | #5B553F | 0.011 |
| Deuteranopia (no green cones) | #5B5641 | 0.010 |
| Tritanopia (no blue cones) | #585451 | 0.032 |
| Achromatopsia (no color) | #555555 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555740
#555740
oklch(44.8% 0.036 111.9)
- #555167
#555167
oklch(44.7% 0.036 293.2)
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 #555740, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.057
- Green Brown #544E03 ΔE 0.060
- Mud Brown #60460F ΔE 0.061
- Army Green #4B5D16 ΔE 0.062
- Pine #2B5D34 ΔE 0.063
- Camo Green #526525 ΔE 0.064
- Dark Green Blue #1F6357 ΔE 0.065
- Dark Slate Gray #2F4F4F ΔE 0.067
Use #555740 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.