#73170D
Closest named color: Reddy Brown (#6E1005). oklch(36.5% 0.128 30.3), rgb(115, 23, 13).
Aa
White text reads best on this color (11.30:1).
About this color
#73170D is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.128 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.017 away. White text reads best on it, at 11.30:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.85:1 |
| White text | 11.30:1 |
Values
| HEX | #73170D |
| RGB | rgb(115, 23, 13) |
| HSL | hsl(6, 80%, 25%) |
| OKLCH | oklch(36.5% 0.128 30.3) |
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 #73170D | 11.30:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #73170D | 1.85:1 | Fails | Lc 9.1 | Not readable |
| #73170D text on white | 11.30:1 | AAA | Lc 94.8 | Preferred for body text |
| #73170D text on black | 1.85:1 | Fails | Lc -7.8 | Not readable |
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 900.
-
Step 50
50
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC4
oklch(88.5% 0.053 31.3)
-
Step 300
300
#F8A99C
oklch(80.8% 0.096 29.6)
-
Step 400
400
#F17765
oklch(70.7% 0.154 30)
-
Step 500
500
#E84C38
oklch(63.2% 0.196 30.5)
-
Step 600
600
#D3200D
oklch(55.6% 0.213 30.4)
-
Step 700
700
#B51000
oklch(49% 0.195 30.4)
-
Step 800
800
#941306
oklch(42.7% 0.164 30.4)
-
Step 900
900 (this color)
#73170D
oklch(36.5% 0.128 30.3)
-
Step 950
950
#46120C
oklch(27% 0.081 29.8)
#73170D 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) | #342D0A | 0.136 |
| Deuteranopia (no green cones) | #4B4207 | 0.124 |
| Tritanopia (no blue cones) | #7F0016 | 0.032 |
| Achromatopsia (no color) | #3A3A3A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #73170D
#73170D
oklch(36.5% 0.128 30.3)
- #004751
#004751
oklch(36.5% 0.063 210.7)
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 #73170D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.017
- Blood #770001 ΔE 0.021
- Maroon #800000 ΔE 0.029
- Chestnut #742802 ΔE 0.034
- Wine Red #7B0323 ΔE 0.038
- Claret #680018 ΔE 0.046
- Dark Red #8B0000 ΔE 0.050
- Bordeaux #7B002C ΔE 0.051
Use #73170D 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.