#906663
Closest named color: Reddish Grey (#997570). oklch(55.3% 0.055 23.6), rgb(144, 102, 99).
Aa
White text reads best on this color (4.92:1).
About this color
#906663 is a medium-dark, muted red. In OKLCH its lightness is 55%, its chroma 0.055 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Reddish Grey (#997570), ΔE 0.044 away. White text reads best on it, at 4.92:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Reddish Grey (#997570) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #906663 |
| RGB | rgb(144, 102, 99) |
| HSL | hsl(4, 19%, 48%) |
| OKLCH | oklch(55.3% 0.055 23.6) |
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 #906663 | 4.92:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #906663 | 4.26:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #906663 text on white | 4.92:1 | AA | Lc 74.0 | Content text, not long reading |
| #906663 text on black | 4.26:1 | AA large text | Lc -27.7 | Dividers and decoration only |
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 600.
-
Step 50
50
#F8F5F4
oklch(97.2% 0.003 39.5)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E2D6D5
oklch(88.5% 0.013 23.2)
-
Step 300
300
#D0BBB9
oklch(80.9% 0.024 24.2)
-
Step 400
400
#B89795
oklch(70.6% 0.04 22.2)
-
Step 500
500
#A67E7B
oklch(63.1% 0.05 23.5)
-
Step 600
600 (this color)
#906663
oklch(55.3% 0.055 23.6)
-
Step 700
700
#7B5553
oklch(49% 0.051 22.5)
-
Step 800
800
#644644
oklch(42.7% 0.042 23.3)
-
Step 900
900
#523B39
oklch(37.7% 0.033 24.4)
-
Step 950
950
#302322
oklch(27.1% 0.02 23.5)
#906663 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) | #6E6C63 | 0.057 |
| Deuteranopia (no green cones) | #787462 | 0.054 |
| Tritanopia (no blue cones) | #996165 | 0.021 |
| Achromatopsia (no color) | #707070 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #906663
#906663
oklch(55.3% 0.055 23.6)
- #4A7C81
#4A7C81
oklch(55.3% 0.054 203.9)
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 #906663, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddish Grey #997570 ΔE 0.044
- Dark Taupe #7F684E ΔE 0.046
- Cocoa #875F42 ΔE 0.049
- Dull Brown #876E4B ΔE 0.050
- Purple Grey #866F85 ΔE 0.051
- Grey Brown #7F7053 ΔE 0.051
- Dirt #8A6E45 ΔE 0.055
- Earth #A2653E ΔE 0.056
Use #906663 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.