#633518
Closest named color: Chestnut (#742802). oklch(38.1% 0.078 50.6), rgb(99, 53, 24).
Aa
White text reads best on this color (10.22:1).
About this color
#633518 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.078 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.041 away. White text reads best on it, at 10.22:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #633518 |
| RGB | rgb(99, 53, 24) |
| HSL | hsl(23, 61%, 24%) |
| OKLCH | oklch(38.1% 0.078 50.6) |
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 #633518 | 10.22:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #633518 | 2.05:1 | Fails | Lc 10.5 | Not readable |
| #633518 text on white | 10.22:1 | AAA | Lc 93.4 | Preferred for body text |
| #633518 text on black | 2.05:1 | Fails | Lc -9.1 | 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
#ECD4C6
oklch(88.6% 0.033 52.3)
-
Step 300
300
#E0B69F
oklch(80.8% 0.058 50.2)
-
Step 400
400
#D08F6A
oklch(70.6% 0.094 50.3)
-
Step 500
500
#C27241
oklch(63.1% 0.12 50.6)
-
Step 600
600
#AD591E
oklch(55.6% 0.129 51)
-
Step 700
700
#954810
oklch(49.1% 0.121 50.3)
-
Step 800
800
#793C12
oklch(42.7% 0.1 50.6)
-
Step 900
900 (this color)
#633518
oklch(38.1% 0.078 50.6)
-
Step 950
950
#391F0F
oklch(27% 0.048 51.1)
#633518 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) | #423B15 | 0.066 |
| Deuteranopia (no green cones) | #4D4518 | 0.060 |
| Tritanopia (no blue cones) | #6D2C2F | 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°).
- #633518
#633518
oklch(38.1% 0.078 50.6)
- #004964
#004964
oklch(38% 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 #633518, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.041
- Mud Brown #60460F ΔE 0.051
- Purple Brown #673A3F ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.070
- Rust Brown #8B3103 ΔE 0.081
- Red Brown #8B2E16 ΔE 0.081
- Green Brown #544E03 ΔE 0.083
- Blood #770001 ΔE 0.083
Use #633518 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.