#643515
Closest named color: Chestnut (#742802). oklch(38.3% 0.081 51.9), rgb(100, 53, 21).
Aa
White text reads best on this color (10.18:1).
About this color
#643515 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.081 and its hue 52°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.039 away. White text reads best on it, at 10.18:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #643515 |
| RGB | rgb(100, 53, 21) |
| HSL | hsl(24, 65%, 24%) |
| OKLCH | oklch(38.3% 0.081 51.9) |
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 #643515 | 10.18:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #643515 | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #643515 text on white | 10.18:1 | AAA | Lc 93.3 | Preferred for body text |
| #643515 text on black | 2.06:1 | Fails | Lc -9.2 | Not readable |
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 900.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#ECD4C5
oklch(88.6% 0.034 54.1)
-
Step 300
300
#E1B69D
oklch(80.8% 0.061 51.7)
-
Step 400
400
#D18F67
oklch(70.7% 0.097 51.8)
-
Step 500
500
#C3723C
oklch(63.1% 0.123 52.3)
-
Step 600
600
#AF5815
oklch(55.6% 0.135 51.7)
-
Step 700
700
#964803
oklch(49.2% 0.125 52.1)
-
Step 800
800
#7A3B0B
oklch(42.7% 0.104 51.4)
-
Step 900
900 (this color)
#643515
oklch(38.3% 0.081 51.9)
-
Step 950
950
#3A1F0D
oklch(27.1% 0.051 52.6)
#643515 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) | #433B11 | 0.067 |
| Deuteranopia (no green cones) | #4E4515 | 0.060 |
| Tritanopia (no blue cones) | #6E2B2E | 0.051 |
| Achromatopsia (no color) | #414141 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643515
#643515
oklch(38.3% 0.081 51.9)
- #004A65
#004A65
oklch(38.4% 0.078 231.2)
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 #643515, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.039
- Mud Brown #60460F ΔE 0.050
- Purple Brown #673A3F ΔE 0.055
- Reddy Brown #6E1005 ΔE 0.070
- Rust Brown #8B3103 ΔE 0.079
- Red Brown #8B2E16 ΔE 0.080
- Green Brown #544E03 ΔE 0.081
- Blood #770001 ΔE 0.083
Use #643515 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.