#A43B11
Closest named color: Russet (#A13905). oklch(49.6% 0.148 39.2), rgb(164, 59, 17).
Aa
White text reads best on this color (6.53:1).
About this color
#A43B11 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.148 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.009 away. White text reads best on it, at 6.53:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #A43B11 |
| RGB | rgb(164, 59, 17) |
| HSL | hsl(17, 81%, 35%) |
| OKLCH | oklch(49.6% 0.148 39.2) |
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 #A43B11 | 6.53:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #A43B11 | 3.21:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #A43B11 text on white | 6.53:1 | AA | Lc 81.5 | Fine for body text |
| #A43B11 text on black | 3.21:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F2D1C6
oklch(88.5% 0.04 39.3)
-
Step 300
300
#EAB19F
oklch(80.8% 0.072 38.2)
-
Step 400
400
#DD876A
oklch(70.7% 0.114 39.4)
-
Step 500
500
#D16540
oklch(63% 0.146 39.2)
-
Step 600
600
#BD491E
oklch(55.6% 0.159 39)
-
Step 700
700 (this color)
#A43B11
oklch(49.6% 0.148 39.2)
-
Step 800
800
#843111
oklch(42.8% 0.122 39.4)
-
Step 900
900
#6A2C16
oklch(37.6% 0.095 39.4)
-
Step 950
950
#3F1B0E
oklch(27.2% 0.061 40.1)
#A43B11 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) | #5A4F08 | 0.146 |
| Deuteranopia (no green cones) | #73660A | 0.133 |
| Tritanopia (no blue cones) | #B51D33 | 0.065 |
| Achromatopsia (no color) | #5D5D5D | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A43B11
#A43B11
oklch(49.6% 0.148 39.2)
- #006D85
#006D85
oklch(49.5% 0.09 220.1)
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 #A43B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.009
- Brick #A03623 ΔE 0.021
- Burnt Umber #A0450E ΔE 0.021
- Rusty Red #AF2F0D ΔE 0.026
- Rust Red #AA2704 ΔE 0.031
- Brown #A52A2A ΔE 0.041
- Rufous #AE2012 ΔE 0.042
- Burnt Red #9F2305 ΔE 0.042
Use #A43B11 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.