#A1243B
Closest named color: Rouge (#AB1239). oklch(47.1% 0.16 16.1), rgb(161, 36, 59).
Aa
White text reads best on this color (7.41:1).
About this color
#A1243B is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.160 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.023 away. White text reads best on it, at 7.41:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.160) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #A1243B |
| RGB | rgb(161, 36, 59) |
| HSL | hsl(349, 63%, 39%) |
| OKLCH | oklch(47.1% 0.16 16.1) |
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 #A1243B | 7.41:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #A1243B | 2.83:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #A1243B text on white | 7.41:1 | AAA | Lc 84.4 | Fine for body text |
| #A1243B text on black | 2.83:1 | Fails | Lc -17.5 | 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
#F9E4E5
oklch(93.6% 0.023 14.3)
-
Step 200
200
#F4CECF
oklch(88.4% 0.043 16.2)
-
Step 300
300
#EEADB0
oklch(80.9% 0.077 15.8)
-
Step 400
400
#E37F86
oklch(70.8% 0.123 16.3)
-
Step 500
500
#D85A68
oklch(63.2% 0.158 16.1)
-
Step 600
600
#C33B50
oklch(55.6% 0.172 16)
-
Step 700
700 (this color)
#A1243B
oklch(47.1% 0.16 16.1)
-
Step 800
800
#882635
oklch(42.6% 0.132 16.1)
-
Step 900
900
#6E252E
oklch(37.7% 0.104 16.3)
-
Step 950
950
#41171B
oklch(27.1% 0.065 16.8)
#A1243B 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) | #47453B | 0.178 |
| Deuteranopia (no green cones) | #675F38 | 0.163 |
| Tritanopia (no blue cones) | #B1002E | 0.036 |
| Achromatopsia (no color) | #555555 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1243B
#A1243B
oklch(47.1% 0.16 16.1)
- #00696A
#00696A
oklch(47.2% 0.08 195.9)
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 #A1243B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.023
- Brown #A52A2A ΔE 0.028
- Auburn #9B2226 ΔE 0.029
- Cranberry #9E003A ΔE 0.034
- Raspberry #B00149 ΔE 0.044
- Carmine #9D0216 ΔE 0.045
- Firebrick #B22222 ΔE 0.046
- Berry #990F4B ΔE 0.046
Use #A1243B 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.