#6B571B
Closest named color: Olive Brown (#645403). oklch(46.5% 0.081 90.1), rgb(107, 87, 27).
Aa
White text reads best on this color (6.99:1).
About this color
#6B571B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 46%, its chroma 0.081 and its hue 90°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.021 away. White text reads best on it, at 6.99:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #6B571B |
| RGB | rgb(107, 87, 27) |
| HSL | hsl(45, 60%, 26%) |
| OKLCH | oklch(46.5% 0.081 90.1) |
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 #6B571B | 6.99:1 | AA | Lc -89.1 | Fine for body text |
| Black text on #6B571B | 3.00:1 | AA large text | Lc 19.9 | Dividers and decoration only |
| #6B571B text on white | 6.99:1 | AA | Lc 84.1 | Fine for body text |
| #6B571B text on black | 3.00:1 | AA large text | Lc -17.9 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EDEAE1
oklch(93.7% 0.012 91.5)
-
Step 200
200
#DFD9C9
oklch(88.6% 0.023 89.8)
-
Step 300
300
#CAC0A4
oklch(80.9% 0.04 90.7)
-
Step 400
400
#B09F73
oklch(70.6% 0.063 89.3)
-
Step 500
500
#9C874E
oklch(63% 0.08 89.8)
-
Step 600
600
#877131
oklch(55.6% 0.087 90.3)
-
Step 700
700 (this color)
#6B571B
oklch(46.5% 0.081 90.1)
-
Step 800
800
#5D4D1F
oklch(42.6% 0.067 90.1)
-
Step 900
900
#4C401F
oklch(37.6% 0.052 89.8)
-
Step 950
950
#2D2613
oklch(27.1% 0.033 89.9)
#6B571B 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) | #615613 | 0.020 |
| Deuteranopia (no green cones) | #665B1E | 0.013 |
| Tritanopia (no blue cones) | #744F4B | 0.075 |
| Achromatopsia (no color) | #595959 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B571B
#6B571B
oklch(46.5% 0.081 90.1)
- #485787
#485787
oklch(46.6% 0.08 269.9)
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 #6B571B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.021
- Mud #735C12 ΔE 0.022
- Greeny Brown #696006 ΔE 0.032
- Medium Brown #7F5112 ΔE 0.037
- Milk Chocolate #7F4E1E ΔE 0.044
- Camo Green #526525 ΔE 0.053
- Green Brown #544E03 ΔE 0.053
- Mud Green #606602 ΔE 0.053
Use #6B571B 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.