#AC1D26
Closest named color: Firebrick (#B22222). oklch(48.3% 0.177 24.5), rgb(172, 29, 38).
Aa
White text reads best on this color (7.09:1).
About this color
#AC1D26 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.177 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.016 away. White text reads best on it, at 7.09:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 2.95:1 |
| White text | 7.09:1 |
Values
| HEX | #AC1D26 |
| RGB | rgb(172, 29, 38) |
| HSL | hsl(356, 71%, 39%) |
| OKLCH | oklch(48.3% 0.177 24.5) |
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 #AC1D26 | 7.09:1 | AAA | Lc -87.9 | Fine for body text |
| Black text on #AC1D26 | 2.95:1 | Fails | Lc 21.1 | Dividers and decoration only |
| #AC1D26 text on white | 7.09:1 | AAA | Lc 82.9 | Fine for body text |
| #AC1D26 text on black | 2.95:1 | Fails | Lc -19.0 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECA
oklch(88.5% 0.047 24.6)
-
Step 300
300
#F3ABA5
oklch(80.8% 0.086 24.5)
-
Step 400
400
#EA7B75
oklch(70.7% 0.138 24.4)
-
Step 500
500
#E05452
oklch(63.2% 0.176 24.3)
-
Step 600
600
#CB3136
oklch(55.6% 0.19 24.5)
-
Step 700
700 (this color)
#AC1D26
oklch(48.3% 0.177 24.5)
-
Step 800
800
#8E1F23
oklch(42.7% 0.146 24.3)
-
Step 900
900
#722121
oklch(37.6% 0.114 24.4)
-
Step 950
950
#431514
oklch(27% 0.072 24.4)
#AC1D26 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) | #4C4525 | 0.193 |
| Deuteranopia (no green cones) | #6F6320 | 0.176 |
| Tritanopia (no blue cones) | #BE0022 | 0.036 |
| Achromatopsia (no color) | #585858 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC1D26
#AC1D26
oklch(48.3% 0.177 24.5)
- #006B74
#006B74
oklch(48.2% 0.082 205)
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 #AC1D26, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.016
- Brown #A52A2A ΔE 0.018
- Rufous #AE2012 ΔE 0.018
- Rouge #AB1239 ΔE 0.029
- Rust Red #AA2704 ΔE 0.029
- Auburn #9B2226 ΔE 0.035
- Scarlet #BE0119 ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.036
Use #AC1D26 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.