#A00509
Closest named color: Carmine (#9D0216). oklch(44.5% 0.18 28.3), rgb(160, 5, 9).
Aa
White text reads best on this color (8.33:1).
About this color
#A00509 is a dark, vivid red. In OKLCH its lightness is 45%, its chroma 0.180 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Carmine (#9D0216), ΔE 0.011 away. White text reads best on it, at 8.33:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Carmine (#9D0216) |
| Black text | 2.52:1 |
| White text | 8.33:1 |
Values
| HEX | #A00509 |
| RGB | rgb(160, 5, 9) |
| HSL | hsl(358, 94%, 32%) |
| OKLCH | oklch(44.5% 0.18 28.3) |
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 #A00509 | 8.33:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #A00509 | 2.52:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #A00509 text on white | 8.33:1 | AAA | Lc 86.3 | Fine for body text |
| #A00509 text on black | 2.52:1 | Fails | Lc -15.7 | 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
#FDA69A
oklch(80.8% 0.105 28.2)
-
Step 400
400
#F77162
oklch(70.6% 0.167 28.5)
-
Step 500
500
#EF3F35
oklch(63.1% 0.214 28.3)
-
Step 600
600
#D9000C
oklch(55.6% 0.228 28.3)
-
Step 700
700
#B80008
oklch(49.2% 0.201 28.3)
-
Step 800
800 (this color)
#A00509
oklch(44.5% 0.18 28.3)
-
Step 900
900
#7B120E
oklch(37.7% 0.139 28.5)
-
Step 950
950
#490E0A
oklch(27% 0.089 28.5)
#A00509 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) | #423A05 | 0.198 |
| Deuteranopia (no green cones) | #655900 | 0.176 |
| Tritanopia (no blue cones) | #B1000C | 0.036 |
| Achromatopsia (no color) | #4E4E4E | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A00509
#A00509
oklch(44.5% 0.18 28.3)
- #005F6A
#005F6A
oklch(44.4% 0.076 208.5)
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 #A00509, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carmine #9D0216 ΔE 0.011
- Deep Red #9A0200 ΔE 0.015
- Blood Red #980002 ΔE 0.019
- Burnt Red #9F2305 ΔE 0.026
- Auburn #9B2226 ΔE 0.027
- Brick Red #8F1402 ΔE 0.036
- Brown #A52A2A ΔE 0.041
- Rufous #AE2012 ΔE 0.042
Use #A00509 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.