#AC1519
Closest named color: Rufous (#AE2012). oklch(47.6% 0.183 27), rgb(172, 21, 25).
Aa
White text reads best on this color (7.30:1).
About this color
#AC1519 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.183 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.015 away. White text reads best on it, at 7.30:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #AC1519 |
| RGB | rgb(172, 21, 25) |
| HSL | hsl(358, 78%, 38%) |
| OKLCH | oklch(47.6% 0.183 27) |
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 #AC1519 | 7.30:1 | AAA | Lc -88.4 | Fine for body text |
| Black text on #AC1519 | 2.87:1 | Fails | Lc 20.7 | Dividers and decoration only |
| #AC1519 text on white | 7.30:1 | AAA | Lc 83.4 | Fine for body text |
| #AC1519 text on black | 2.87:1 | Fails | Lc -18.6 | 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
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F8CEC8
oklch(88.6% 0.048 27.6)
-
Step 300
300
#F5ABA2
oklch(81% 0.089 26.9)
-
Step 400
400
#EC7B6F
oklch(70.8% 0.141 27.5)
-
Step 500
500
#E25249
oklch(63.1% 0.181 27.1)
-
Step 600
600
#CD2D2B
oklch(55.5% 0.196 27)
-
Step 700
700 (this color)
#AC1519
oklch(47.6% 0.183 27)
-
Step 800
800
#901C1B
oklch(42.7% 0.152 26.9)
-
Step 900
900
#74201C
oklch(37.8% 0.118 27.1)
-
Step 950
950
#441411
oklch(26.9% 0.075 26.9)
#AC1519 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) | #4A4216 | 0.200 |
| Deuteranopia (no green cones) | #6E620F | 0.181 |
| Tritanopia (no blue cones) | #BE001A | 0.036 |
| Achromatopsia (no color) | #565656 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC1519
#AC1519
oklch(47.6% 0.183 27)
- #006974
#006974
oklch(47.6% 0.082 207.4)
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 #AC1519, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.015
- Firebrick #B22222 ΔE 0.021
- Brown #A52A2A ΔE 0.024
- Rust Red #AA2704 ΔE 0.025
- Burnt Red #9F2305 ΔE 0.032
- Auburn #9B2226 ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.036
- Scarlet #BE0119 ΔE 0.036
Use #AC1519 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.