#A3633A
Closest named color: Earth (#A2653E). oklch(56.2% 0.1 52), rgb(163, 99, 58).
Aa
White text reads best on this color (4.76:1).
About this color
#A3633A is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.100 and its hue 52°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.005 away. White text reads best on it, at 4.76:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.100) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #A3633A |
| RGB | rgb(163, 99, 58) |
| HSL | hsl(23, 48%, 43%) |
| OKLCH | oklch(56.2% 0.1 52) |
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 #A3633A | 4.76:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #A3633A | 4.40:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #A3633A text on white | 4.76:1 | AA | Lc 72.9 | Content text, not long reading |
| #A3633A text on black | 4.40:1 | AA large text | Lc -28.8 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F1E8E2
oklch(93.6% 0.013 56.2)
-
Step 200
200
#E7D5CA
oklch(88.5% 0.025 53.7)
-
Step 300
300
#D9B9A7
oklch(80.9% 0.045 51.1)
-
Step 400
400
#C59477
oklch(70.6% 0.072 51.8)
-
Step 500
500
#B67954
oklch(63.1% 0.092 51.6)
-
Step 600
600 (this color)
#A3633A
oklch(56.2% 0.1 52)
-
Step 700
700
#8A502A
oklch(49.1% 0.094 52.1)
-
Step 800
800
#704224
oklch(42.7% 0.077 52.3)
-
Step 900
900
#5B3822
oklch(37.7% 0.061 52.1)
-
Step 950
950
#352115
oklch(27% 0.037 51.5)
#A3633A 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) | #756A36 | 0.082 |
| Deuteranopia (no green cones) | #84783A | 0.075 |
| Tritanopia (no blue cones) | #B25659 | 0.064 |
| Achromatopsia (no color) | #737373 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3633A
#A3633A
oklch(56.2% 0.1 52)
- #277FA6
#277FA6
oklch(56.3% 0.1 232)
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 #A3633A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.005
- Sepia #985E2B ΔE 0.029
- Raw Umber #A75E09 ΔE 0.032
- Copper #B66325 ΔE 0.038
- Orangey Brown #B16002 ΔE 0.039
- Sienna #A0522D ΔE 0.041
- Umber #B26400 ΔE 0.043
- Raw Sienna #9A6200 ΔE 0.043
Use #A3633A 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.