#6B511D
Closest named color: Olive Brown (#645403). oklch(45.2% 0.077 81.7), rgb(107, 81, 29).
Aa
White text reads best on this color (7.44:1).
About this color
#6B511D is a medium-dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.077 and its hue 82°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.025 away. White text reads best on it, at 7.44:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.81:1 |
| White text | 7.44:1 |
Values
| HEX | #6B511D |
| RGB | rgb(107, 81, 29) |
| HSL | hsl(40, 57%, 27%) |
| OKLCH | oklch(45.2% 0.077 81.7) |
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 #6B511D | 7.44:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #6B511D | 2.81:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #6B511D text on white | 7.44:1 | AAA | Lc 85.8 | Fine for body text |
| #6B511D text on black | 2.81:1 | Fails | Lc -16.3 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E0
oklch(93.5% 0.013 82.4)
-
Step 200
200
#E1D8C7
oklch(88.5% 0.025 83.4)
-
Step 300
300
#CFBEA1
oklch(80.8% 0.044 81.1)
-
Step 400
400
#B79D6D
oklch(70.8% 0.071 82.4)
-
Step 500
500
#A58444
oklch(63.1% 0.092 82.3)
-
Step 600
600
#906D23
oklch(55.6% 0.099 82.3)
-
Step 700
700
#7B5B15
oklch(49.2% 0.093 82)
-
Step 800
800 (this color)
#6B511D
oklch(45.2% 0.077 81.7)
-
Step 900
900
#513E19
oklch(37.6% 0.059 81.9)
-
Step 950
950
#302510
oklch(27.2% 0.038 82.2)
#6B511D 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) | #5C5117 | 0.028 |
| Deuteranopia (no green cones) | #62581F | 0.024 |
| Tritanopia (no blue cones) | #744946 | 0.067 |
| Achromatopsia (no color) | #555555 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B511D
#6B511D
oklch(45.2% 0.077 81.7)
- #3E5580
#3E5580
oklch(45.1% 0.076 262.3)
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 #6B511D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.025
- Medium Brown #7F5112 ΔE 0.037
- Milk Chocolate #7F4E1E ΔE 0.038
- Mud #735C12 ΔE 0.038
- Mud Brown #60460F ΔE 0.039
- Green Brown #544E03 ΔE 0.048
- Greeny Brown #696006 ΔE 0.050
- Saddle Brown #8B4513 ΔE 0.064
Use #6B511D 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.