#A40721
Closest named color: Carmine (#9D0216). oklch(45.6% 0.181 23), rgb(164, 7, 33).
Aa
White text reads best on this color (7.98:1).
About this color
#A40721 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.181 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Carmine (#9D0216), ΔE 0.019 away. White text reads best on it, at 7.98:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Carmine (#9D0216) |
| Black text | 2.63:1 |
| White text | 7.98:1 |
Values
| HEX | #A40721 |
| RGB | rgb(164, 7, 33) |
| HSL | hsl(350, 92%, 34%) |
| OKLCH | oklch(45.6% 0.181 23) |
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 #A40721 | 7.98:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #A40721 | 2.63:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #A40721 text on white | 7.98:1 | AAA | Lc 85.4 | Fine for body text |
| #A40721 text on black | 2.63:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FEE2E0
oklch(93.5% 0.031 22.6)
-
Step 200
200
#FECBC7
oklch(88.6% 0.058 23.5)
-
Step 300
300
#FEA5A1
oklch(80.9% 0.106 22.5)
-
Step 400
400
#F86F6E
oklch(70.7% 0.169 22.8)
-
Step 500
500
#F03B47
oklch(63.1% 0.216 22.8)
-
Step 600
600
#D8002C
oklch(55.7% 0.225 23.1)
-
Step 700
700
#B70024
oklch(49.2% 0.198 23)
-
Step 800
800 (this color)
#A40721
oklch(45.6% 0.181 23)
-
Step 900
900
#7B0F1A
oklch(37.6% 0.14 23.1)
-
Step 950
950
#490D10
oklch(27% 0.09 23.1)
#A40721 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) | #433C20 | 0.200 |
| Deuteranopia (no green cones) | #675C1A | 0.182 |
| Tritanopia (no blue cones) | #B50016 | 0.037 |
| Achromatopsia (no color) | #515151 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A40721
#A40721
oklch(45.6% 0.181 23)
- #00636A
#00636A
oklch(45.5% 0.078 203.3)
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 #A40721, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carmine #9D0216 ΔE 0.019
- Auburn #9B2226 ΔE 0.024
- Rouge #AB1239 ΔE 0.032
- Deep Red #9A0200 ΔE 0.032
- Brown #A52A2A ΔE 0.033
- Blood Red #980002 ΔE 0.035
- Burnt Red #9F2305 ΔE 0.036
- Cranberry #9E003A ΔE 0.037
Use #A40721 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.