#A03643
Closest named color: Brown (#A52A2A). oklch(48.9% 0.14 16.8), rgb(160, 54, 67).
Aa
White text reads best on this color (6.76:1).
About this color
#A03643 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.140 and its hue 17°. 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 6.76:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.140) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.10:1 |
| White text | 6.76:1 |
Values
| HEX | #A03643 |
| RGB | rgb(160, 54, 67) |
| HSL | hsl(353, 50%, 42%) |
| OKLCH | oklch(48.9% 0.14 16.8) |
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 #A03643 | 6.76:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #A03643 | 3.10:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #A03643 text on white | 6.76:1 | AA | Lc 82.5 | Fine for body text |
| #A03643 text on black | 3.10:1 | AA large text | Lc -19.4 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F1D0D0
oklch(88.5% 0.037 17.9)
-
Step 300
300
#E9AFB1
oklch(80.8% 0.068 16.4)
-
Step 400
400
#DC8488
oklch(70.8% 0.108 17.3)
-
Step 500
500
#CF626B
oklch(63% 0.138 16.8)
-
Step 600
600
#BB4653
oklch(55.7% 0.151 16.9)
-
Step 700
700 (this color)
#A03643
oklch(48.9% 0.14 16.8)
-
Step 800
800
#822E38
oklch(42.6% 0.116 16.4)
-
Step 900
900
#692A30
oklch(37.6% 0.09 16.7)
-
Step 950
950
#3E191C
oklch(26.9% 0.058 16.8)
#A03643 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) | #504D43 | 0.154 |
| Deuteranopia (no green cones) | #6B6340 | 0.141 |
| Tritanopia (no blue cones) | #AF213B | 0.036 |
| Achromatopsia (no color) | #5B5B5B | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A03643
#A03643
oklch(48.9% 0.14 16.8)
- #006E70
#006E70
oklch(48.8% 0.083 197)
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 #A03643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.031
- Brick #A03623 ΔE 0.039
- Light Maroon #A24857 ΔE 0.040
- Light Burgundy #A8415B ΔE 0.040
- Rouge #AB1239 ΔE 0.043
- Auburn #9B2226 ΔE 0.044
- Firebrick #B22222 ΔE 0.049
- Rufous #AE2012 ΔE 0.054
Use #A03643 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.