#AA3708
Closest named color: Rusty Red (#AF2F0D). oklch(50.1% 0.158 38.2), rgb(170, 55, 8).
Aa
White text reads best on this color (6.44:1).
About this color
#AA3708 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.158 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.015 away. White text reads best on it, at 6.44:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #AA3708 |
| RGB | rgb(170, 55, 8) |
| HSL | hsl(17, 91%, 35%) |
| OKLCH | oklch(50.1% 0.158 38.2) |
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 #AA3708 | 6.44:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #AA3708 | 3.25:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #AA3708 text on white | 6.44:1 | AA | Lc 80.9 | Fine for body text |
| #AA3708 text on black | 3.25:1 | AA large text | Lc -21.0 | 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
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F3D0C5
oklch(88.4% 0.042 38.2)
-
Step 300
300
#EDB09D
oklch(80.9% 0.077 38)
-
Step 400
400
#E18467
oklch(70.7% 0.122 38.1)
-
Step 500
500
#D6613B
oklch(63.1% 0.157 38.3)
-
Step 600
600
#C24314
oklch(55.6% 0.171 38)
-
Step 700
700 (this color)
#AA3708
oklch(50.1% 0.158 38.2)
-
Step 800
800
#872C0A
oklch(42.6% 0.131 38.1)
-
Step 900
900
#6D2913
oklch(37.7% 0.103 37.9)
-
Step 950
950
#40190D
oklch(27% 0.065 37.7)
#AA3708 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) | #594E00 | 0.161 |
| Deuteranopia (no green cones) | #766800 | 0.144 |
| Tritanopia (no blue cones) | #BC0E30 | 0.067 |
| Achromatopsia (no color) | #5E5E5E | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA3708
#AA3708
oklch(50.1% 0.158 38.2)
- #006F86
#006F86
oklch(50% 0.09 218.8)
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 #AA3708, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.015
- Russet #A13905 ΔE 0.018
- Rust Red #AA2704 ΔE 0.025
- Brick #A03623 ΔE 0.027
- Burnt Umber #A0450E ΔE 0.030
- Rufous #AE2012 ΔE 0.034
- Sinopia #BB3E03 ΔE 0.039
- Firebrick #B22222 ΔE 0.040
Use #AA3708 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.