#633D4E
Closest named color: Purple Brown (#673A3F). oklch(41% 0.058 351.6), rgb(99, 61, 78).
Aa
White text reads best on this color (9.09:1).
About this color
#633D4E is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.058 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.024 away. White text reads best on it, at 9.09:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #633D4E |
| RGB | rgb(99, 61, 78) |
| HSL | hsl(333, 24%, 31%) |
| OKLCH | oklch(41% 0.058 351.6) |
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 #633D4E | 9.09:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #633D4E | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #633D4E text on white | 9.09:1 | AAA | Lc 90.8 | Preferred for body text |
| #633D4E text on black | 2.30:1 | Fails | Lc -11.5 | 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 800.
-
Step 50
50
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EA
oklch(93.5% 0.01 352.4)
-
Step 200
200
#E4D4DA
oklch(88.5% 0.019 352.7)
-
Step 300
300
#D3B8C3
oklch(80.9% 0.034 351.4)
-
Step 400
400
#BC93A4
oklch(70.7% 0.054 351.8)
-
Step 500
500
#AB788E
oklch(63.1% 0.07 351.7)
-
Step 600
600
#966178
oklch(55.7% 0.075 352.2)
-
Step 700
700
#805065
oklch(49.2% 0.07 352.2)
-
Step 800
800 (this color)
#633D4E
oklch(41% 0.058 351.6)
-
Step 900
900
#553744
oklch(37.6% 0.047 352)
-
Step 950
950
#322128
oklch(27.1% 0.029 352.7)
#633D4E 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) | #41444F | 0.062 |
| Deuteranopia (no green cones) | #4A4B4D | 0.058 |
| Tritanopia (no blue cones) | #683C43 | 0.020 |
| Achromatopsia (no color) | #484848 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633D4E
#633D4E
oklch(41% 0.058 351.6)
- #245547
#245547
oklch(41.1% 0.059 172.1)
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 #633D4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.024
- Brownish Purple #76424E ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.075
- Dusty Grape #545775 ΔE 0.084
- Dark Mauve #874C62 ΔE 0.087
- Onyx #343A40 ΔE 0.091
- Chestnut #742802 ΔE 0.093
- Dark Grey Blue #29465B ΔE 0.094
Use #633D4E 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.