#665A18
Closest named color: Olive Brown (#645403). oklch(46.6% 0.085 98.6), rgb(102, 90, 24).
Aa
White text reads best on this color (6.90:1).
About this color
#665A18 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 47%, its chroma 0.085 and its hue 99°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.019 away. White text reads best on it, at 6.90:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 3.04:1 |
| White text | 6.90:1 |
Values
| HEX | #665A18 |
| RGB | rgb(102, 90, 24) |
| HSL | hsl(51, 62%, 25%) |
| OKLCH | oklch(46.6% 0.085 98.6) |
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 #665A18 | 6.90:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #665A18 | 3.04:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #665A18 text on white | 6.90:1 | AA | Lc 83.8 | Fine for body text |
| #665A18 text on black | 3.04:1 | AA large text | Lc -18.2 | 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 700.
-
Step 50
50
#F6F5F1
oklch(97% 0.005 95.1)
-
Step 100
100
#ECEAE1
oklch(93.6% 0.012 96.4)
-
Step 200
200
#DDDAC9
oklch(88.6% 0.023 98.7)
-
Step 300
300
#C7C1A4
oklch(80.8% 0.04 97.5)
-
Step 400
400
#ABA272
oklch(70.8% 0.066 98.8)
-
Step 500
500
#968A4C
oklch(63% 0.084 98.6)
-
Step 600
600
#81742E
oklch(55.6% 0.091 98.8)
-
Step 700
700 (this color)
#665A18
oklch(46.6% 0.085 98.6)
-
Step 800
800
#594F1D
oklch(42.6% 0.07 98)
-
Step 900
900
#49421E
oklch(37.7% 0.054 98.5)
-
Step 950
950
#2B2712
oklch(27.1% 0.035 98.8)
#665A18 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) | #63580D | 0.010 |
| Deuteranopia (no green cones) | #675C1C | 0.006 |
| Tritanopia (no blue cones) | #6E534D | 0.077 |
| Achromatopsia (no color) | #5A5A5A | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665A18
#665A18
oklch(46.6% 0.085 98.6)
- #4F5489
#4F5489
oklch(46.6% 0.086 278.4)
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 #665A18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.019
- Greeny Brown #696006 ΔE 0.023
- Mud #735C12 ΔE 0.024
- Camo Green #526525 ΔE 0.041
- Mud Green #606602 ΔE 0.041
- Army Green #4B5D16 ΔE 0.044
- Camouflage Green #4B6113 ΔE 0.047
- Medium Brown #7F5112 ΔE 0.049
Use #665A18 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.