#A40011
Closest named color: Carmine (#9D0216). oklch(45.2% 0.184 26.6), rgb(164, 0, 17).
Aa
White text reads best on this color (8.11:1).
About this color
#A40011 is a medium-dark, vivid red. In OKLCH its lightness is 45%, its chroma 0.184 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Carmine (#9D0216), ΔE 0.015 away. White text reads best on it, at 8.11:1.
| Hue family | Reds |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Carmine (#9D0216) |
| Black text | 2.58:1 |
| White text | 8.11:1 |
Values
| HEX | #A40011 |
| RGB | rgb(164, 0, 17) |
| HSL | hsl(354, 100%, 32%) |
| OKLCH | oklch(45.2% 0.184 26.6) |
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 #A40011 | 8.11:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #A40011 | 2.58:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #A40011 text on white | 8.11:1 | AAA | Lc 85.5 | Fine for body text |
| #A40011 text on black | 2.58:1 | Fails | Lc -16.5 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DF
oklch(93.7% 0.03 27.8)
-
Step 200
200
#FECBC4
oklch(88.5% 0.059 27.4)
-
Step 300
300
#FFA59B
oklch(80.9% 0.108 26.6)
-
Step 400
400
#F96F64
oklch(70.7% 0.171 26.9)
-
Step 500
500
#F23A38
oklch(63.2% 0.22 26.7)
-
Step 600
600
#D8001A
oklch(55.5% 0.226 26.6)
-
Step 700
700
#B70014
oklch(49% 0.2 26.6)
-
Step 800
800 (this color)
#A40011
oklch(45.2% 0.184 26.6)
-
Step 900
900
#7C0D11
oklch(37.6% 0.143 26.5)
-
Step 950
950
#490D0C
oklch(26.9% 0.09 26.4)
#A40011 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) | #433B0E | 0.203 |
| Deuteranopia (no green cones) | #675B03 | 0.183 |
| Tritanopia (no blue cones) | #B6000B | 0.039 |
| Achromatopsia (no color) | #505050 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A40011
#A40011
oklch(45.2% 0.184 26.6)
- #00626B
#00626B
oklch(45.3% 0.077 205.8)
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 #A40011, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carmine #9D0216 ΔE 0.015
- Deep Red #9A0200 ΔE 0.024
- Blood Red #980002 ΔE 0.028
- Auburn #9B2226 ΔE 0.028
- Burnt Red #9F2305 ΔE 0.030
- Rufous #AE2012 ΔE 0.037
- Brown #A52A2A ΔE 0.038
- Rust Red #AA2704 ΔE 0.041
Use #A40011 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.