#633723
Closest named color: Purple Brown (#673A3F). oklch(38.7% 0.07 44.6), rgb(99, 55, 35).
Aa
White text reads best on this color (9.99:1).
About this color
#633723 is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.041 away. White text reads best on it, at 9.99:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.10:1 |
| White text | 9.99:1 |
Values
| HEX | #633723 |
| RGB | rgb(99, 55, 35) |
| HSL | hsl(19, 48%, 26%) |
| OKLCH | oklch(38.7% 0.07 44.6) |
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 #633723 | 9.99:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #633723 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #633723 text on white | 9.99:1 | AAA | Lc 92.9 | Preferred for body text |
| #633723 text on black | 2.10:1 | Fails | Lc -9.5 | 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F3E7E2
oklch(93.6% 0.015 44.2)
-
Step 200
200
#EBD4CA
oklch(88.6% 0.029 45)
-
Step 300
300
#DFB7A5
oklch(81% 0.053 45.5)
-
Step 400
400
#CD9075
oklch(70.7% 0.084 44.8)
-
Step 500
500
#BF7351
oklch(63.1% 0.107 44.5)
-
Step 600
600
#AB5A34
oklch(55.7% 0.118 44.6)
-
Step 700
700
#924927
oklch(49% 0.109 44.2)
-
Step 800
800
#773D21
oklch(42.8% 0.091 45.1)
-
Step 900
900 (this color)
#633723
oklch(38.7% 0.07 44.6)
-
Step 950
950
#381F14
oklch(27% 0.044 44.2)
#633723 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) | #433D21 | 0.063 |
| Deuteranopia (no green cones) | #4D4623 | 0.058 |
| Tritanopia (no blue cones) | #6C2F32 | 0.039 |
| Achromatopsia (no color) | #424242 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633723
#633723
oklch(38.7% 0.07 44.6)
- #064C60
#064C60
oklch(38.8% 0.07 223.9)
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 #633723, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.041
- Chestnut #742802 ΔE 0.045
- Mud Brown #60460F ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.074
- Brownish Purple #76424E ΔE 0.076
- Charcoal Grey #3C4142 ΔE 0.079
- Red Brown #8B2E16 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.081
Use #633723 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.