#A43B19
Closest named color: Russet (#A13905). oklch(49.6% 0.146 37.4), rgb(164, 59, 25).
Aa
White text reads best on this color (6.52:1).
About this color
#A43B19 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.146 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.012 away. White text reads best on it, at 6.52:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #A43B19 |
| RGB | rgb(164, 59, 25) |
| HSL | hsl(15, 74%, 37%) |
| OKLCH | oklch(49.6% 0.146 37.4) |
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 #A43B19 | 6.52:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #A43B19 | 3.21:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #A43B19 text on white | 6.52:1 | AA | Lc 81.4 | Fine for body text |
| #A43B19 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
#F2D1C7
oklch(88.6% 0.04 37.5)
-
Step 300
300
#EAB1A0
oklch(80.8% 0.071 37.3)
-
Step 400
400
#DD866D
oklch(70.6% 0.113 36.8)
-
Step 500
500
#D16545
oklch(63.1% 0.145 37.3)
-
Step 600
600
#BD4925
oklch(55.7% 0.158 37.2)
-
Step 700
700 (this color)
#A43B19
oklch(49.6% 0.146 37.4)
-
Step 800
800
#843016
oklch(42.7% 0.122 37.2)
-
Step 900
900
#6A2C19
oklch(37.7% 0.094 37.6)
-
Step 950
950
#3E1A10
oklch(26.8% 0.059 36.4)
#A43B19 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) | #594F13 | 0.148 |
| Deuteranopia (no green cones) | #736614 | 0.133 |
| Tritanopia (no blue cones) | #B51E34 | 0.062 |
| Achromatopsia (no color) | #5E5E5E | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A43B19
#A43B19
oklch(49.6% 0.146 37.4)
- #006E83
#006E83
oklch(49.6% 0.089 217.1)
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 #A43B19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.012
- Brick #A03623 ΔE 0.018
- Burnt Umber #A0450E ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.025
- Rust Red #AA2704 ΔE 0.030
- Brown #A52A2A ΔE 0.038
- Rufous #AE2012 ΔE 0.040
- Burnt Red #9F2305 ΔE 0.042
Use #A43B19 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.