#AE0017
Closest named color: Rufous (#AE2012). oklch(47.3% 0.192 25.7), rgb(174, 0, 23).
Aa
White text reads best on this color (7.46:1).
About this color
#AE0017 is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.192 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.024 away. White text reads best on it, at 7.46:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #AE0017 |
| RGB | rgb(174, 0, 23) |
| HSL | hsl(352, 100%, 34%) |
| OKLCH | oklch(47.3% 0.192 25.7) |
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 #AE0017 | 7.46:1 | AAA | Lc -88.3 | Fine for body text |
| Black text on #AE0017 | 2.81:1 | Fails | Lc 20.7 | Dividers and decoration only |
| #AE0017 text on white | 7.46:1 | AAA | Lc 83.3 | Fine for body text |
| #AE0017 text on black | 2.81:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FACDC8
oklch(88.6% 0.052 25.6)
-
Step 300
300
#F7A9A2
oklch(80.8% 0.093 25)
-
Step 400
400
#EF786F
oklch(70.8% 0.148 25.9)
-
Step 500
500
#E64D49
oklch(63.2% 0.19 25.7)
-
Step 600
600
#D1232B
oklch(55.6% 0.207 25.5)
-
Step 700
700 (this color)
#AE0017
oklch(47.3% 0.192 25.7)
-
Step 800
800
#92151A
oklch(42.6% 0.159 25.8)
-
Step 900
900
#761C1C
oklch(37.8% 0.124 25.5)
-
Step 950
950
#451311
oklch(27% 0.077 26)
#AE0017 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) | #473F15 | 0.212 |
| Deuteranopia (no green cones) | #6D610B | 0.192 |
| Tritanopia (no blue cones) | #C0000F | 0.039 |
| Achromatopsia (no color) | #555555 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AE0017
#AE0017
oklch(47.3% 0.192 25.7)
- #006872
#006872
oklch(47.3% 0.081 206.3)
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 #AE0017, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.024
- Firebrick #B22222 ΔE 0.027
- Brown #A52A2A ΔE 0.033
- Scarlet #BE0119 ΔE 0.035
- Rust Red #AA2704 ΔE 0.035
- Rouge #AB1239 ΔE 0.035
- Carmine #9D0216 ΔE 0.037
- Burnt Red #9F2305 ΔE 0.039
Use #AE0017 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.