#633618
Closest named color: Chestnut (#742802). oklch(38.3% 0.077 52), rgb(99, 54, 24).
Aa
White text reads best on this color (10.13:1).
About this color
#633618 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.077 and its hue 52°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.042 away. White text reads best on it, at 10.13:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.07:1 |
| White text | 10.13:1 |
Values
| HEX | #633618 |
| RGB | rgb(99, 54, 24) |
| HSL | hsl(24, 61%, 24%) |
| OKLCH | oklch(38.3% 0.077 52) |
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 #633618 | 10.13:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #633618 | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #633618 text on white | 10.13:1 | AAA | Lc 93.2 | Preferred for body text |
| #633618 text on black | 2.07:1 | 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
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#EBD4C6
oklch(88.5% 0.032 53.5)
-
Step 300
300
#E0B79F
oklch(81% 0.058 52)
-
Step 400
400
#CF906A
oklch(70.7% 0.093 51.8)
-
Step 500
500
#C17340
oklch(63.1% 0.119 52.1)
-
Step 600
600
#AC5A1D
oklch(55.6% 0.128 52.3)
-
Step 700
700
#94490E
oklch(49.1% 0.12 51.8)
-
Step 800
800
#783D11
oklch(42.8% 0.099 52.3)
-
Step 900
900 (this color)
#633618
oklch(38.3% 0.077 52)
-
Step 950
950
#391F0E
oklch(27% 0.049 52.4)
#633618 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) | #433B15 | 0.064 |
| Deuteranopia (no green cones) | #4E4518 | 0.057 |
| Tritanopia (no blue cones) | #6D2D2F | 0.048 |
| Achromatopsia (no color) | #414141 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633618
#633618
oklch(38.3% 0.077 52)
- #024A65
#024A65
oklch(38.4% 0.077 231.5)
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 #633618, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.042
- Mud Brown #60460F ΔE 0.049
- Purple Brown #673A3F ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.072
- Green Brown #544E03 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.080
- Red Brown #8B2E16 ΔE 0.081
- Charcoal Grey #3C4142 ΔE 0.085
Use #633618 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.