#A4040B
Closest named color: Carmine (#9D0216). oklch(45.3% 0.183 27.9), rgb(164, 4, 11).
Aa
White text reads best on this color (8.07:1).
About this color
#A4040B is a medium-dark, vivid red. In OKLCH its lightness is 45%, its chroma 0.183 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Carmine (#9D0216), ΔE 0.017 away. White text reads best on it, at 8.07:1.
| Hue family | Reds |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Carmine (#9D0216) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #A4040B |
| RGB | rgb(164, 4, 11) |
| HSL | hsl(357, 95%, 33%) |
| OKLCH | oklch(45.3% 0.183 27.9) |
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 #A4040B | 8.07:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #A4040B | 2.60:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #A4040B text on white | 8.07:1 | AAA | Lc 85.5 | Fine for body text |
| #A4040B text on black | 2.60:1 | 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
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FECBC4
oklch(88.5% 0.059 27.4)
-
Step 300
300
#FEA69A
oklch(80.9% 0.106 28.1)
-
Step 400
400
#F96F62
oklch(70.7% 0.172 27.7)
-
Step 500
500
#F13B33
oklch(63% 0.219 28)
-
Step 600
600
#D9000F
oklch(55.6% 0.227 28)
-
Step 700
700
#B8000B
oklch(49.2% 0.201 28)
-
Step 800
800 (this color)
#A4040B
oklch(45.3% 0.183 27.9)
-
Step 900
900
#7C0F0D
oklch(37.7% 0.142 28.2)
-
Step 950
950
#490D0A
oklch(26.9% 0.09 27.9)
#A4040B 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) | #443B07 | 0.201 |
| Deuteranopia (no green cones) | #675B00 | 0.180 |
| Tritanopia (no blue cones) | #B6000C | 0.038 |
| Achromatopsia (no color) | #505050 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4040B
#A4040B
oklch(45.3% 0.183 27.9)
- #00626D
#00626D
oklch(45.4% 0.078 208.1)
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 #A4040B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carmine #9D0216 ΔE 0.017
- Deep Red #9A0200 ΔE 0.023
- Burnt Red #9F2305 ΔE 0.026
- Blood Red #980002 ΔE 0.028
- Auburn #9B2226 ΔE 0.028
- Rufous #AE2012 ΔE 0.034
- Brown #A52A2A ΔE 0.037
- Rust Red #AA2704 ΔE 0.038
Use #A4040B 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.