#633C4E
Closest named color: Purple Brown (#673A3F). oklch(40.9% 0.06 350.9), rgb(99, 60, 78).
Aa
White text reads best on this color (9.18:1).
About this color
#633C4E is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.060 and its hue 351°. 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 9.18:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #633C4E |
| RGB | rgb(99, 60, 78) |
| HSL | hsl(332, 25%, 31%) |
| OKLCH | oklch(40.9% 0.06 350.9) |
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 #633C4E | 9.18:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #633C4E | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #633C4E text on white | 9.18:1 | AAA | Lc 91.0 | Preferred for body text |
| #633C4E text on black | 2.28:1 | Fails | Lc -11.3 | 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
#F0E7EB
oklch(93.6% 0.011 348.4)
-
Step 200
200
#E4D4DB
oklch(88.5% 0.02 349.1)
-
Step 300
300
#D4B8C3
oklch(81% 0.035 352.2)
-
Step 400
400
#BD93A5
oklch(70.8% 0.056 351.1)
-
Step 500
500
#AC778F
oklch(63% 0.073 350.6)
-
Step 600
600
#976079
oklch(55.7% 0.079 351.2)
-
Step 700
700
#804F66
oklch(49.1% 0.073 350.5)
-
Step 800
800 (this color)
#633C4E
oklch(40.9% 0.06 350.9)
-
Step 900
900
#553745
oklch(37.7% 0.048 350.1)
-
Step 950
950
#322028
oklch(26.9% 0.031 351.1)
#633C4E 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) | #40444F | 0.064 |
| Deuteranopia (no green cones) | #494A4D | 0.060 |
| Tritanopia (no blue cones) | #683B42 | 0.021 |
| Achromatopsia (no color) | #484848 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633C4E
#633C4E
oklch(40.9% 0.06 350.9)
- #225545
#225545
oklch(41% 0.061 169.9)
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 #633C4E, 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 0.043
- Charcoal Grey #3C4142 ΔE 0.076
- Dusty Grape #545775 ΔE 0.086
- Dark Mauve #874C62 ΔE 0.088
- Onyx #343A40 ΔE 0.091
- Chestnut #742802 ΔE 0.093
- Dark Grey Blue #29465B ΔE 0.095
Use #633C4E 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.