#633428
Closest named color: Purple Brown (#673A3F). oklch(38.2% 0.071 35.3), rgb(99, 52, 40).
Aa
White text reads best on this color (10.23:1).
About this color
#633428 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.071 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.035 away. White text reads best on it, at 10.23:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.071) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.05:1 |
| White text | 10.23:1 |
Values
| HEX | #633428 |
| RGB | rgb(99, 52, 40) |
| HSL | hsl(12, 42%, 27%) |
| OKLCH | oklch(38.2% 0.071 35.3) |
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 #633428 | 10.23:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #633428 | 2.05:1 | Fails | Lc 10.5 | Not readable |
| #633428 text on white | 10.23:1 | AAA | Lc 93.5 | Preferred for body text |
| #633428 text on black | 2.05:1 | Fails | Lc -9.0 | 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
#F4E6E3
oklch(93.5% 0.016 32)
-
Step 200
200
#ECD3CC
oklch(88.6% 0.03 36.2)
-
Step 300
300
#E1B5AA
oklch(80.9% 0.054 34.4)
-
Step 400
400
#D08E7C
oklch(70.8% 0.085 35.9)
-
Step 500
500
#C2705B
oklch(63.1% 0.109 35.3)
-
Step 600
600
#AD5741
oklch(55.6% 0.118 35.4)
-
Step 700
700
#944633
oklch(49% 0.11 34.9)
-
Step 800
800
#793A2B
oklch(42.7% 0.092 34.6)
-
Step 900
900 (this color)
#633428
oklch(38.2% 0.071 35.3)
-
Step 950
950
#391E17
oklch(27% 0.044 35.4)
#633428 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) | #403B27 | 0.069 |
| Deuteranopia (no green cones) | #4B4527 | 0.065 |
| Tritanopia (no blue cones) | #6C2C31 | 0.032 |
| Achromatopsia (no color) | #414141 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633428
#633428
oklch(38.2% 0.071 35.3)
- #004C59
#004C59
oklch(38.3% 0.067 214.1)
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 #633428, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.035
- Chestnut #742802 ΔE 0.046
- Mud Brown #60460F ΔE 0.066
- Reddy Brown #6E1005 ΔE 0.068
- Brownish Purple #76424E ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.079
- Blood #770001 ΔE 0.080
- Red Brown #8B2E16 ΔE 0.081
Use #633428 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.