#A43743
Closest named color: Brown (#A52A2A). oklch(49.7% 0.143 17.7), rgb(164, 55, 67).
Aa
White text reads best on this color (6.55:1).
About this color
#A43743 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.143 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.031 away. White text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #A43743 |
| RGB | rgb(164, 55, 67) |
| HSL | hsl(353, 50%, 43%) |
| OKLCH | oklch(49.7% 0.143 17.7) |
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 #A43743 | 6.55:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #A43743 | 3.20:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #A43743 text on white | 6.55:1 | AA | Lc 81.6 | Fine for body text |
| #A43743 text on black | 3.20:1 | AA large text | Lc -20.3 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F2D0D0
oklch(88.6% 0.038 17.9)
-
Step 300
300
#EAAFB0
oklch(80.9% 0.069 17.6)
-
Step 400
400
#DD8387
oklch(70.7% 0.111 17.4)
-
Step 500
500
#D16169
oklch(63.1% 0.142 17.7)
-
Step 600
600
#BC4451
oklch(55.5% 0.154 17.3)
-
Step 700
700 (this color)
#A43743
oklch(49.7% 0.143 17.7)
-
Step 800
800
#832D36
oklch(42.6% 0.118 17.6)
-
Step 900
900
#6A292F
oklch(37.6% 0.093 17.2)
-
Step 950
950
#3E191C
oklch(26.9% 0.058 16.8)
#A43743 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) | #524F43 | 0.157 |
| Deuteranopia (no green cones) | #6E6640 | 0.145 |
| Tritanopia (no blue cones) | #B3203C | 0.037 |
| Achromatopsia (no color) | #5D5D5D | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A43743
#A43743
oklch(49.7% 0.143 17.7)
- #007174
#007174
oklch(49.8% 0.085 198)
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 #A43743, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.031
- Light Burgundy #A8415B ΔE 0.036
- Light Maroon #A24857 ΔE 0.036
- Brick #A03623 ΔE 0.039
- Rouge #AB1239 ΔE 0.044
- Firebrick #B22222 ΔE 0.044
- Auburn #9B2226 ΔE 0.048
- Rufous #AE2012 ΔE 0.051
Use #A43743 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.