#665437
Closest named color: Olive Brown (#645403). oklch(45.7% 0.049 79), rgb(102, 84, 55).
Aa
White text reads best on this color (7.27:1).
About this color
#665437 is a medium-dark, muted brown. In OKLCH its lightness is 46%, its chroma 0.049 and its hue 79°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.047 away. White text reads best on it, at 7.27:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.049) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #665437 |
| RGB | rgb(102, 84, 55) |
| HSL | hsl(37, 30%, 31%) |
| OKLCH | oklch(45.7% 0.049 79) |
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 #665437 | 7.27:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #665437 | 2.88:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #665437 text on white | 7.27:1 | AAA | Lc 85.2 | Fine for body text |
| #665437 text on black | 2.88:1 | Fails | Lc -16.8 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EDE9E4
oklch(93.6% 0.008 73.7)
-
Step 200
200
#DFD8CE
oklch(88.5% 0.016 77.1)
-
Step 300
300
#CBBFAC
oklch(80.9% 0.029 79.4)
-
Step 400
400
#B09E81
oklch(70.7% 0.046 79.6)
-
Step 500
500
#9D8661
oklch(63.2% 0.059 79.2)
-
Step 600
600
#886F47
oklch(55.6% 0.064 78.6)
-
Step 700
700
#735D39
oklch(49.2% 0.059 79)
-
Step 800
800 (this color)
#665437
oklch(45.7% 0.049 79)
-
Step 900
900
#4D3F2A
oklch(37.7% 0.038 77.3)
-
Step 950
950
#2D2519
oklch(27% 0.024 77.5)
#665437 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) | #5B5435 | 0.020 |
| Deuteranopia (no green cones) | #605838 | 0.015 |
| Tritanopia (no blue cones) | #6D4F4D | 0.043 |
| Achromatopsia (no color) | #575757 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665437
#665437
oklch(45.7% 0.049 79)
- #465873
#465873
oklch(45.7% 0.05 258.3)
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 #665437, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.047
- Milk Chocolate #7F4E1E ΔE 0.048
- Medium Brown #7F5112 ΔE 0.052
- Mud Brown #60460F ΔE 0.052
- Mud #735C12 ΔE 0.053
- Green Brown #544E03 ΔE 0.062
- Greeny Brown #696006 ΔE 0.063
- Camo Green #526525 ΔE 0.070
Use #665437 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.