#644F45
Closest named color: Brownish Purple (#76424E). oklch(44.6% 0.033 46.8), rgb(100, 79, 69).
Aa
White text reads best on this color (7.64:1).
About this color
#644F45 is a dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.033 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.053 away. White text reads best on it, at 7.64:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #644F45 |
| RGB | rgb(100, 79, 69) |
| HSL | hsl(19, 18%, 33%) |
| OKLCH | oklch(44.6% 0.033 46.8) |
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 #644F45 | 7.64:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #644F45 | 2.74:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #644F45 text on white | 7.64:1 | AAA | Lc 86.6 | Fine for body text |
| #644F45 text on black | 2.74:1 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EDE9E7
oklch(93.7% 0.005 48.7)
-
Step 200
200
#DFD7D3
oklch(88.4% 0.01 48.6)
-
Step 300
300
#CCBDB6
oklch(80.9% 0.02 46.8)
-
Step 400
400
#B29B91
oklch(70.7% 0.031 44.9)
-
Step 500
500
#9E8376
oklch(63.1% 0.038 47.2)
-
Step 600
600
#896C5E
oklch(55.6% 0.043 47.1)
-
Step 700
700
#745A4E
oklch(49.1% 0.039 46)
-
Step 800
800 (this color)
#644F45
oklch(44.6% 0.033 46.8)
-
Step 900
900
#4D3E36
oklch(37.7% 0.025 49.6)
-
Step 950
950
#2D2420
oklch(26.9% 0.016 45.3)
#644F45 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) | #545144 | 0.028 |
| Deuteranopia (no green cones) | #595545 | 0.025 |
| Tritanopia (no blue cones) | #6A4C4C | 0.020 |
| Achromatopsia (no color) | #535353 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644F45
#644F45
oklch(44.6% 0.033 46.8)
- #415862
#415862
oklch(44.6% 0.032 226.5)
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 #644F45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.053
- Purple Brown #673A3F ΔE 0.058
- Mud Brown #60460F ΔE 0.063
- Milk Chocolate #7F4E1E ΔE 0.064
- Medium Brown #7F5112 ΔE 0.073
- Olive Brown #645403 ΔE 0.074
- Dusty Grape #545775 ΔE 0.076
- Green Brown #544E03 ΔE 0.080
Use #644F45 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.