#645033
Closest named color: Mud Brown (#60460F). oklch(44.4% 0.051 76.1), rgb(100, 80, 51).
Aa
White text reads best on this color (7.67:1).
About this color
#645033 is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.051 and its hue 76°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.042 away. White text reads best on it, at 7.67:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #645033 |
| RGB | rgb(100, 80, 51) |
| HSL | hsl(36, 32%, 30%) |
| OKLCH | oklch(44.4% 0.051 76.1) |
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 #645033 | 7.67:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #645033 | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #645033 text on white | 7.67:1 | AAA | Lc 86.6 | Fine for body text |
| #645033 text on black | 2.73:1 | Fails | Lc -15.5 | 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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EDE9E4
oklch(93.6% 0.008 73.7)
-
Step 200
200
#DFD8CD
oklch(88.5% 0.017 79.3)
-
Step 300
300
#CCBEAC
oklch(80.8% 0.029 74.2)
-
Step 400
400
#B29D80
oklch(70.7% 0.047 75.8)
-
Step 500
500
#9F8560
oklch(63.2% 0.061 76.1)
-
Step 600
600
#8A6E46
oklch(55.6% 0.066 75.6)
-
Step 700
700
#755C38
oklch(49.1% 0.061 75.6)
-
Step 800
800 (this color)
#645033
oklch(44.4% 0.051 76.1)
-
Step 900
900
#4E3F29
oklch(37.8% 0.04 76.6)
-
Step 950
950
#2E2519
oklch(27.1% 0.025 74.4)
#645033 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) | #585031 | 0.022 |
| Deuteranopia (no green cones) | #5D5534 | 0.018 |
| Tritanopia (no blue cones) | #6B4B49 | 0.043 |
| Achromatopsia (no color) | #535353 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645033
#645033
oklch(44.4% 0.051 76.1)
- #415570
#415570
oklch(44.4% 0.051 256.1)
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 #645033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.042
- Olive Brown #645403 ΔE 0.047
- Milk Chocolate #7F4E1E ΔE 0.051
- Green Brown #544E03 ΔE 0.056
- Medium Brown #7F5112 ΔE 0.056
- Mud #735C12 ΔE 0.060
- Greeny Brown #696006 ΔE 0.070
- Army Green #4B5D16 ΔE 0.072
Use #645033 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.