#645425
Closest named color: Olive Brown (#645403). oklch(45.1% 0.068 90.7), rgb(100, 84, 37).
Aa
White text reads best on this color (7.40:1).
About this color
#645425 is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.068 and its hue 91°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.024 away. White text reads best on it, at 7.40:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.068) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #645425 |
| RGB | rgb(100, 84, 37) |
| HSL | hsl(45, 46%, 27%) |
| OKLCH | oklch(45.1% 0.068 90.7) |
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 #645425 | 7.40:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #645425 | 2.83:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #645425 text on white | 7.40:1 | AAA | Lc 85.7 | Fine for body text |
| #645425 text on black | 2.83:1 | Fails | Lc -16.4 | 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
#EDEAE1
oklch(93.7% 0.012 91.5)
-
Step 200
200
#DED9C9
oklch(88.5% 0.022 92.5)
-
Step 300
300
#CAC0A4
oklch(80.9% 0.04 90.7)
-
Step 400
400
#B0A073
oklch(70.9% 0.064 90.8)
-
Step 500
500
#9C884D
oklch(63.2% 0.082 91.2)
-
Step 600
600
#87712F
oklch(55.6% 0.089 90.8)
-
Step 700
700
#725E22
oklch(48.9% 0.082 90.4)
-
Step 800
800 (this color)
#645425
oklch(45.1% 0.068 90.7)
-
Step 900
900
#4C401E
oklch(37.6% 0.053 90.3)
-
Step 950
950
#2D2612
oklch(27.1% 0.035 90.7)
#645425 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) | #5D5320 | 0.014 |
| Deuteranopia (no green cones) | #615727 | 0.009 |
| Tritanopia (no blue cones) | #6C4E49 | 0.061 |
| Achromatopsia (no color) | #555555 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645425
#645425
oklch(45.1% 0.068 90.7)
- #47537C
#47537C
oklch(45% 0.069 271)
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 #645425, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.024
- Mud #735C12 ΔE 0.041
- Mud Brown #60460F ΔE 0.042
- Green Brown #544E03 ΔE 0.043
- Greeny Brown #696006 ΔE 0.047
- Medium Brown #7F5112 ΔE 0.048
- Milk Chocolate #7F4E1E ΔE 0.049
- Army Green #4B5D16 ΔE 0.053
Use #645425 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.