#64333B
Closest named color: Purple Brown (#673A3F). oklch(38.7% 0.071 10.5), rgb(100, 51, 59).
Aa
White text reads best on this color (10.10:1).
About this color
#64333B is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.071 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.020 away. White text reads best on it, at 10.10:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.071) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.07:1 |
| White text | 10.10:1 |
Values
| HEX | #64333B |
| RGB | rgb(100, 51, 59) |
| HSL | hsl(350, 32%, 30%) |
| OKLCH | oklch(38.7% 0.071 10.5) |
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 #64333B | 10.10:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #64333B | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #64333B text on white | 10.10:1 | AAA | Lc 93.2 | Preferred for body text |
| #64333B text on black | 2.07:1 | Fails | Lc -9.3 | 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 900.
-
Step 50
50
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F4E6E7
oklch(93.6% 0.015 12.4)
-
Step 200
200
#ECD2D4
oklch(88.6% 0.029 12.4)
-
Step 300
300
#E0B3B8
oklch(80.8% 0.053 10.8)
-
Step 400
400
#CF8B94
oklch(70.7% 0.084 10.7)
-
Step 500
500
#C16C7A
oklch(63% 0.109 10.1)
-
Step 600
600
#AC5363
oklch(55.6% 0.117 10.4)
-
Step 700
700
#944352
oklch(49.2% 0.11 10.4)
-
Step 800
800
#783743
oklch(42.6% 0.091 10.2)
-
Step 900
900 (this color)
#64333B
oklch(38.7% 0.071 10.5)
-
Step 950
950
#391D21
oklch(27% 0.044 11.3)
#64333B 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) | #3C3C3B | 0.077 |
| Deuteranopia (no green cones) | #48453A | 0.071 |
| Tritanopia (no blue cones) | #6C2E36 | 0.019 |
| Achromatopsia (no color) | #424242 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64333B
#64333B
oklch(38.7% 0.071 10.5)
- #004F4C
#004F4C
oklch(38.6% 0.067 190.4)
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 #64333B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.020
- Brownish Purple #76424E ΔE 0.059
- Chestnut #742802 ΔE 0.066
- Reddy Brown #6E1005 ΔE 0.077
- Wine Red #7B0323 ΔE 0.078
- Charcoal Grey #3C4142 ΔE 0.079
- Bordeaux #7B002C ΔE 0.079
- Merlot #730039 ΔE 0.082
Use #64333B 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.