#AA2318
Closest named color: Rufous (#AE2012). oklch(48.2% 0.173 29.6), rgb(170, 35, 24).
Aa
White text reads best on this color (7.08:1).
About this color
#AA2318 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.173 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.008 away. White text reads best on it, at 7.08:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #AA2318 |
| RGB | rgb(170, 35, 24) |
| HSL | hsl(5, 75%, 38%) |
| OKLCH | oklch(48.2% 0.173 29.6) |
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 #AA2318 | 7.08:1 | AAA | Lc -88.0 | Fine for body text |
| Black text on #AA2318 | 2.96:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #AA2318 text on white | 7.08:1 | AAA | Lc 83.0 | Fine for body text |
| #AA2318 text on black | 2.96:1 | Fails | Lc -18.9 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F6CEC7
oklch(88.4% 0.046 29.7)
-
Step 300
300
#F2ADA1
oklch(81% 0.084 30)
-
Step 400
400
#E87E6E
oklch(70.7% 0.134 29.8)
-
Step 500
500
#DD5848
oklch(63.1% 0.17 29.5)
-
Step 600
600
#C93629
oklch(55.6% 0.186 29.4)
-
Step 700
700 (this color)
#AA2318
oklch(48.2% 0.173 29.6)
-
Step 800
800
#8D2319
oklch(42.8% 0.143 29.6)
-
Step 900
900
#71241B
oklch(37.8% 0.111 29.8)
-
Step 950
950
#431611
oklch(27.1% 0.071 28.9)
#AA2318 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) | #4E4514 | 0.186 |
| Deuteranopia (no green cones) | #6F630F | 0.169 |
| Tritanopia (no blue cones) | #BC0022 | 0.041 |
| Achromatopsia (no color) | #585858 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA2318
#AA2318
oklch(48.2% 0.173 29.6)
- #006A78
#006A78
oklch(48.1% 0.083 210.5)
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 #AA2318, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.008
- Rust Red #AA2704 ΔE 0.013
- Brown #A52A2A ΔE 0.017
- Firebrick #B22222 ΔE 0.019
- Rusty Red #AF2F0D ΔE 0.024
- Burnt Red #9F2305 ΔE 0.026
- Brick #A03623 ΔE 0.029
- Auburn #9B2226 ΔE 0.035
Use #AA2318 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.