#A1636B
Closest named color: Reddish Grey (#997570). oklch(57% 0.081 11.6), rgb(161, 99, 107).
Aa
White text reads best on this color (4.65:1).
About this color
#A1636B is a medium-dark, moderately saturated red. In OKLCH its lightness is 57%, its chroma 0.081 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Reddish Grey (#997570), ΔE 0.047 away. White text reads best on it, at 4.65:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Reddish Grey (#997570) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #A1636B |
| RGB | rgb(161, 99, 107) |
| HSL | hsl(352, 25%, 51%) |
| OKLCH | oklch(57% 0.081 11.6) |
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 #A1636B | 4.65:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #A1636B | 4.51:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #A1636B text on white | 4.65:1 | AA | Lc 72.2 | Content text, not long reading |
| #A1636B text on black | 4.51:1 | AA | Lc -29.5 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E8
oklch(93.6% 0.011 10.3)
-
Step 200
200
#E6D4D6
oklch(88.5% 0.02 9.8)
-
Step 300
300
#D7B7BA
oklch(80.8% 0.037 11.5)
-
Step 400
400
#C29297
oklch(70.7% 0.058 11.7)
-
Step 500
500
#B2777E
oklch(63.2% 0.075 11.6)
-
Step 600
600 (this color)
#A1636B
oklch(57% 0.081 11.6)
-
Step 700
700
#864E56
oklch(49.1% 0.076 11)
-
Step 800
800
#6D4046
oklch(42.7% 0.063 11.5)
-
Step 900
900
#58373B
oklch(37.7% 0.048 11.7)
-
Step 950
950
#342022
oklch(27% 0.031 12.8)
#A1636B 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) | #6E6D6B | 0.087 |
| Deuteranopia (no green cones) | #7D796A | 0.082 |
| Tritanopia (no blue cones) | #AC5D66 | 0.023 |
| Achromatopsia (no color) | #747474 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1636B
#A1636B
oklch(57% 0.081 11.6)
- #318683
#318683
oklch(56.9% 0.08 191.8)
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 #A1636B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddish Grey #997570 ΔE 0.047
- Mauve #AE7181 ΔE 0.049
- Dusky Rose #BA6873 ΔE 0.049
- Light Plum #9D5783 ΔE 0.056
- Pinkish Brown #B17261 ΔE 0.057
- Purple Grey #866F85 ΔE 0.058
- Dusky Purple #895B7B ΔE 0.059
- Clay #B66A50 ΔE 0.061
Use #A1636B 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.