#AD1E1D
Closest named color: Rufous (#AE2012). oklch(48.4% 0.178 27.4), rgb(173, 30, 29).
Aa
White text reads best on this color (7.04:1).
About this color
#AD1E1D is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.178 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.009 away. White text reads best on it, at 7.04:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.98:1 |
| White text | 7.04:1 |
Values
| HEX | #AD1E1D |
| RGB | rgb(173, 30, 29) |
| HSL | hsl(0, 71%, 40%) |
| OKLCH | oklch(48.4% 0.178 27.4) |
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 #AD1E1D | 7.04:1 | AAA | Lc -87.7 | Fine for body text |
| Black text on #AD1E1D | 2.98:1 | Fails | Lc 21.3 | Dividers and decoration only |
| #AD1E1D text on white | 7.04:1 | AAA | Lc 82.7 | Fine for body text |
| #AD1E1D text on black | 2.98:1 | Fails | Lc -19.2 | 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
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F7CEC8
oklch(88.5% 0.047 27.8)
-
Step 300
300
#F3ACA2
oklch(80.9% 0.085 28)
-
Step 400
400
#EA7C70
oklch(70.7% 0.138 27.5)
-
Step 500
500
#E0544A
oklch(63.1% 0.177 27.4)
-
Step 600
600
#CB312D
oklch(55.5% 0.191 27.2)
-
Step 700
700 (this color)
#AD1E1D
oklch(48.4% 0.178 27.4)
-
Step 800
800
#8E1F1C
oklch(42.6% 0.147 27.3)
-
Step 900
900
#72211D
oklch(37.6% 0.115 27)
-
Step 950
950
#431511
oklch(26.9% 0.072 27.9)
#AD1E1D 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) | #4D451B | 0.194 |
| Deuteranopia (no green cones) | #706415 | 0.176 |
| Tritanopia (no blue cones) | #BF0020 | 0.037 |
| Achromatopsia (no color) | #595959 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD1E1D
#AD1E1D
oklch(48.4% 0.178 27.4)
- #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 #AD1E1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.009
- Firebrick #B22222 ΔE 0.013
- Brown #A52A2A ΔE 0.020
- Rust Red #AA2704 ΔE 0.021
- Rusty Red #AF2F0D ΔE 0.029
- Burnt Red #9F2305 ΔE 0.033
- Scarlet #BE0119 ΔE 0.034
- Brick #A03623 ΔE 0.037
Use #AD1E1D 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.