#63404B
Closest named color: Purple Brown (#673A3F). oklch(41.5% 0.051 359.1), rgb(99, 64, 75).
Aa
White text reads best on this color (8.87:1).
About this color
#63404B is a dark, muted red. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.021 away. White text reads best on it, at 8.87:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.36:1 |
| White text | 8.87:1 |
Values
| HEX | #63404B |
| RGB | rgb(99, 64, 75) |
| HSL | hsl(341, 21%, 32%) |
| OKLCH | oklch(41.5% 0.051 359.1) |
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 #63404B | 8.87:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #63404B | 2.36:1 | Fails | Lc 13.7 | Not readable |
| #63404B text on white | 8.87:1 | AAA | Lc 90.2 | Preferred for body text |
| #63404B text on black | 2.36:1 | Fails | Lc -12.1 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#EFE7EA
oklch(93.5% 0.01 352.4)
-
Step 200
200
#E3D5D9
oklch(88.5% 0.016 358.1)
-
Step 300
300
#D2B9C0
oklch(80.9% 0.03 359)
-
Step 400
400
#BB95A0
oklch(70.8% 0.048 359.2)
-
Step 500
500
#A97A88
oklch(63% 0.061 359.5)
-
Step 600
600
#946372
oklch(55.6% 0.066 359.6)
-
Step 700
700
#7E5260
oklch(49.2% 0.062 359)
-
Step 800
800 (this color)
#63404B
oklch(41.5% 0.051 359.1)
-
Step 900
900
#533941
oklch(37.7% 0.039 359)
-
Step 950
950
#312126
oklch(26.9% 0.026 358.5)
#63404B 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) | #44464B | 0.056 |
| Deuteranopia (no green cones) | #4D4C4A | 0.051 |
| Tritanopia (no blue cones) | #693E44 | 0.015 |
| Achromatopsia (no color) | #4A4A4A | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63404B
#63404B
oklch(41.5% 0.051 359.1)
- #29554C
#29554C
oklch(41.5% 0.051 178.7)
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 #63404B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.021
- Brownish Purple #76424E ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.072
- Dusty Grape #545775 ΔE 0.082
- Dark Mauve #874C62 ΔE 0.084
- Mud Brown #60460F ΔE 0.087
- Dark Slate Gray #2F4F4F ΔE 0.089
- Chestnut #742802 ΔE 0.090
Use #63404B 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.