#633F4E
Closest named color: Purple Brown (#673A3F). oklch(41.4% 0.055 353.1), rgb(99, 63, 78).
Aa
White text reads best on this color (8.93:1).
About this color
#633F4E is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.055 and its hue 353°. 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 8.93:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #633F4E |
| RGB | rgb(99, 63, 78) |
| HSL | hsl(335, 22%, 32%) |
| OKLCH | oklch(41.4% 0.055 353.1) |
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 #633F4E | 8.93:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #633F4E | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #633F4E text on white | 8.93:1 | AAA | Lc 90.4 | Preferred for body text |
| #633F4E text on black | 2.35:1 | Fails | Lc -11.9 | 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
#E3D5DA
oklch(88.6% 0.017 353.7)
-
Step 300
300
#D2B9C2
oklch(81% 0.031 354)
-
Step 400
400
#BB94A3
oklch(70.7% 0.051 353.5)
-
Step 500
500
#A9798D
oklch(63% 0.066 352.4)
-
Step 600
600
#946277
oklch(55.6% 0.071 352.8)
-
Step 700
700
#7E5164
oklch(49.1% 0.066 352.9)
-
Step 800
800 (this color)
#633F4E
oklch(41.4% 0.055 353.1)
-
Step 900
900
#543843
oklch(37.7% 0.043 354.1)
-
Step 950
950
#312127
oklch(27% 0.027 354.7)
#633F4E 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) | #43464F | 0.058 |
| Deuteranopia (no green cones) | #4B4C4D | 0.055 |
| Tritanopia (no blue cones) | #683E44 | 0.018 |
| Achromatopsia (no color) | #4A4A4A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633F4E
#633F4E
oklch(41.4% 0.055 353.1)
- #285549
#285549
oklch(41.4% 0.054 174)
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 #633F4E, 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 0.039
- Charcoal Grey #3C4142 ΔE 0.074
- Dusty Grape #545775 ΔE 0.081
- Dark Mauve #874C62 ΔE 0.084
- Onyx #343A40 ΔE 0.091
- Dark Slate Gray #2F4F4F ΔE 0.091
- Dusk #4E5481 ΔE 0.093
Use #633F4E 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.