#AF1818
Closest named color: Rufous (#AE2012). oklch(48.4% 0.184 27.7), rgb(175, 24, 24).
Aa
White text reads best on this color (7.07:1).
About this color
#AF1818 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.184 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.010 away. White text reads best on it, at 7.07:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #AF1818 |
| RGB | rgb(175, 24, 24) |
| HSL | hsl(0, 76%, 39%) |
| OKLCH | oklch(48.4% 0.184 27.7) |
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 #AF1818 | 7.07:1 | AAA | Lc -87.7 | Fine for body text |
| Black text on #AF1818 | 2.96:1 | Fails | Lc 21.4 | Dividers and decoration only |
| #AF1818 text on white | 7.07:1 | AAA | Lc 82.6 | Fine for body text |
| #AF1818 text on black | 2.96:1 | Fails | Lc -19.3 | 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
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CDC7
oklch(88.4% 0.05 27.4)
-
Step 300
300
#F5ABA1
oklch(80.9% 0.089 27.7)
-
Step 400
400
#EC7A6E
oklch(70.6% 0.143 27.5)
-
Step 500
500
#E25247
oklch(63.1% 0.181 27.8)
-
Step 600
600
#CE2D28
oklch(55.7% 0.198 27.8)
-
Step 700
700 (this color)
#AF1818
oklch(48.4% 0.184 27.7)
-
Step 800
800
#901C19
oklch(42.7% 0.152 27.6)
-
Step 900
900
#741F1A
oklch(37.7% 0.12 27.7)
-
Step 950
950
#441410
oklch(26.9% 0.075 27.9)
#AF1818 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) | #4C4415 | 0.201 |
| Deuteranopia (no green cones) | #70640D | 0.182 |
| Tritanopia (no blue cones) | #C1001B | 0.036 |
| Achromatopsia (no color) | #585858 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AF1818
#AF1818
oklch(48.4% 0.184 27.7)
- #006B77
#006B77
oklch(48.3% 0.083 208.3)
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 #AF1818, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.010
- Firebrick #B22222 ΔE 0.014
- Rust Red #AA2704 ΔE 0.023
- Brown #A52A2A ΔE 0.025
- Scarlet #BE0119 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.031
- Burnt Red #9F2305 ΔE 0.036
- Rouge #AB1239 ΔE 0.039
Use #AF1818 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.