#A3603F
Closest named color: Earth (#A2653E). oklch(55.8% 0.099 46.3), rgb(163, 96, 63).
Aa
White text reads best on this color (4.88:1).
About this color
#A3603F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.099 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Earth (#A2653E), ΔE 0.013 away. White text reads best on it, at 4.88:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.099) |
| Temperature | warm |
| Nearest name | Earth (#A2653E) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #A3603F |
| RGB | rgb(163, 96, 63) |
| HSL | hsl(20, 44%, 44%) |
| OKLCH | oklch(55.8% 0.099 46.3) |
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 #A3603F | 4.88:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #A3603F | 4.30:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #A3603F text on white | 4.88:1 | AA | Lc 73.6 | Content text, not long reading |
| #A3603F text on black | 4.30:1 | AA large text | Lc -28.1 | 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
#F2E7E3
oklch(93.6% 0.013 41.2)
-
Step 200
200
#E8D5CC
oklch(88.6% 0.024 47.1)
-
Step 300
300
#DAB8A9
oklch(80.8% 0.045 45.2)
-
Step 400
400
#C7937B
oklch(70.7% 0.072 45.8)
-
Step 500
500
#B77859
oklch(63.1% 0.091 46.8)
-
Step 600
600 (this color)
#A3603F
oklch(55.8% 0.099 46.3)
-
Step 700
700
#8B4F31
oklch(49.2% 0.092 46.4)
-
Step 800
800
#714129
oklch(42.8% 0.076 46.6)
-
Step 900
900
#5C3725
oklch(37.7% 0.06 46.3)
-
Step 950
950
#362016
oklch(26.9% 0.039 45.1)
#A3603F 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) | #72683C | 0.087 |
| Deuteranopia (no green cones) | #82773E | 0.081 |
| Tritanopia (no blue cones) | #B15358 | 0.058 |
| Achromatopsia (no color) | #717171 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3603F
#A3603F
oklch(55.8% 0.099 46.3)
- #1B7FA0
#1B7FA0
oklch(55.8% 0.099 226.1)
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 #A3603F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Earth #A2653E ΔE 0.013
- Sepia #985E2B ΔE 0.031
- Sienna #A0522D ΔE 0.035
- Raw Umber #A75E09 ΔE 0.039
- Copper #B66325 ΔE 0.043
- Orangey Brown #B16002 ΔE 0.046
- Cinnamon #AC4F06 ΔE 0.047
- Clay #B66A50 ΔE 0.048
Use #A3603F 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.