#AC3C0E
Closest named color: Rusty Red (#AF2F0D). oklch(51% 0.156 39), rgb(172, 60, 14).
Aa
White text reads best on this color (6.16:1).
About this color
#AC3C0E is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.156 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.021 away. White text reads best on it, at 6.16:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #AC3C0E |
| RGB | rgb(172, 60, 14) |
| HSL | hsl(17, 85%, 36%) |
| OKLCH | oklch(51% 0.156 39) |
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 #AC3C0E | 6.16:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #AC3C0E | 3.40:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #AC3C0E text on white | 6.16:1 | AA | Lc 79.8 | Fine for body text |
| #AC3C0E text on black | 3.40:1 | AA large text | Lc -22.1 | 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
#ECB19D
oklch(81% 0.075 39.5)
-
Step 400
400
#E08567
oklch(70.7% 0.12 39)
-
Step 500
500
#D5633C
oklch(63.2% 0.154 39)
-
Step 600
600
#C04514
oklch(55.5% 0.167 39)
-
Step 700
700 (this color)
#AC3C0E
oklch(51% 0.156 39)
-
Step 800
800
#862E0A
oklch(42.7% 0.128 39.3)
-
Step 900
900
#6C2A13
oklch(37.6% 0.1 38.9)
-
Step 950
950
#401A0D
oklch(27.1% 0.063 39.2)
#AC3C0E 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) | #5D5103 | 0.156 |
| Deuteranopia (no green cones) | #786B04 | 0.142 |
| Tritanopia (no blue cones) | #BE1A34 | 0.068 |
| Achromatopsia (no color) | #616161 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC3C0E
#AC3C0E
oklch(51% 0.156 39)
- #00728A
#00728A
oklch(51% 0.092 219.2)
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 #AC3C0E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.021
- Russet #A13905 ΔE 0.024
- Burnt Umber #A0450E ΔE 0.027
- Sinopia #BB3E03 ΔE 0.031
- Brick #A03623 ΔE 0.033
- Rust Red #AA2704 ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.040
- Rufous #AE2012 ΔE 0.042
Use #AC3C0E 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.