#A43701
Closest named color: Russet (#A13905). oklch(49% 0.153 40), rgb(164, 55, 1).
Aa
White text reads best on this color (6.71:1).
About this color
#A43701 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.153 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.006 away. White text reads best on it, at 6.71:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #A43701 |
| RGB | rgb(164, 55, 1) |
| HSL | hsl(20, 99%, 32%) |
| OKLCH | oklch(49% 0.153 40) |
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 #A43701 | 6.71:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #A43701 | 3.12:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #A43701 text on white | 6.71:1 | AA | Lc 82.1 | Fine for body text |
| #A43701 text on black | 3.12:1 | AA large text | Lc -19.8 | 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 700.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E5DF
oklch(93.5% 0.021 39.4)
-
Step 200
200
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EBB19D
oklch(80.9% 0.074 39.9)
-
Step 400
400
#DF8666
oklch(70.8% 0.119 40.4)
-
Step 500
500
#D3643B
oklch(63.1% 0.151 40.2)
-
Step 600
600
#BF4713
oklch(55.6% 0.165 40)
-
Step 700
700 (this color)
#A43701
oklch(49% 0.153 40)
-
Step 800
800
#852F09
oklch(42.6% 0.126 40.2)
-
Step 900
900
#6B2B13
oklch(37.6% 0.098 39.9)
-
Step 950
950
#3F1A0D
oklch(27% 0.062 39.6)
#A43701 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) | #584C00 | 0.151 |
| Deuteranopia (no green cones) | #726500 | 0.137 |
| Tritanopia (no blue cones) | #B5132F | 0.068 |
| Achromatopsia (no color) | #5C5C5C | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A43701
#A43701
oklch(49% 0.153 40)
- #006C83
#006C83
oklch(49.1% 0.089 219.3)
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 #A43701, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.006
- Brick #A03623 ΔE 0.022
- Rusty Red #AF2F0D ΔE 0.025
- Rust Red #AA2704 ΔE 0.026
- Burnt Umber #A0450E ΔE 0.026
- Burnt Red #9F2305 ΔE 0.037
- Rufous #AE2012 ΔE 0.038
- Brown #A52A2A ΔE 0.041
Use #A43701 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.