#645600
Closest named color: Olive Brown (#645403). oklch(45.3% 0.094 98.3), rgb(100, 86, 0).
Aa
White text reads best on this color (7.30:1).
About this color
#645600 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.094 and its hue 98°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.006 away. White text reads best on it, at 7.30:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #645600 |
| RGB | rgb(100, 86, 0) |
| HSL | hsl(52, 100%, 20%) |
| OKLCH | oklch(45.3% 0.094 98.3) |
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 #645600 | 7.30:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #645600 | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #645600 text on white | 7.30:1 | AAA | Lc 85.2 | Fine for body text |
| #645600 text on black | 2.87:1 | 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
#F7F6F0
oklch(97.2% 0.008 98.9)
-
Step 100
100
#ECEADE
oklch(93.5% 0.016 99)
-
Step 200
200
#DEDAC3
oklch(88.5% 0.031 98.9)
-
Step 300
300
#C9C299
oklch(80.9% 0.056 99.4)
-
Step 400
400
#AFA160
oklch(70.6% 0.087 97.5)
-
Step 500
500
#9B8A2D
oklch(63.1% 0.112 98.7)
-
Step 600
600
#857300
oklch(55.6% 0.115 98.3)
-
Step 700
700
#706100
oklch(49.2% 0.102 98.7)
-
Step 800
800 (this color)
#645600
oklch(45.3% 0.094 98.3)
-
Step 900
900
#4C4208
oklch(37.8% 0.073 98.6)
-
Step 950
950
#2C2708
oklch(27.1% 0.047 100.1)
#645600 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) | #605400 | 0.010 |
| Deuteranopia (no green cones) | #645808 | 0.006 |
| Tritanopia (no blue cones) | #6D4E48 | 0.087 |
| Achromatopsia (no color) | #565656 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645600
#645600
oklch(45.3% 0.094 98.3)
- #4B5089
#4B5089
oklch(45.4% 0.093 278.2)
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 #645600, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.006
- Greeny Brown #696006 ΔE 0.031
- Mud #735C12 ΔE 0.034
- Green Brown #544E03 ΔE 0.038
- Army Green #4B5D16 ΔE 0.041
- Camouflage Green #4B6113 ΔE 0.046
- Mud Green #606602 ΔE 0.047
- Camo Green #526525 ΔE 0.047
Use #645600 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.