#1B0509
Closest named color: Very Dark Brown (#1D0200). oklch(15.9% 0.041 9.7), rgb(27, 5, 9).
Aa
White text reads best on this color (19.58:1).
About this color
#1B0509 is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.041 and its hue 10°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.025 away. White text reads best on it, at 19.58:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.07:1 |
| White text | 19.58:1 |
Values
| HEX | #1B0509 |
| RGB | rgb(27, 5, 9) |
| HSL | hsl(349, 69%, 6%) |
| OKLCH | oklch(15.9% 0.041 9.7) |
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 #1B0509 | 19.58:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1B0509 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #1B0509 text on white | 19.58:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B0509 text on black | 1.07:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F3E6E8
oklch(93.6% 0.014 6.7)
-
Step 200
200
#EAD2D5
oklch(88.4% 0.027 9.1)
-
Step 300
300
#DEB4B9
oklch(80.9% 0.049 10.2)
-
Step 400
400
#CC8D96
oklch(70.8% 0.078 9.8)
-
Step 500
500
#BD6F7C
oklch(63.1% 0.1 9.6)
-
Step 600
600
#A85665
oklch(55.6% 0.108 9.6)
-
Step 700
700
#904654
oklch(49.1% 0.101 9.6)
-
Step 800
800
#753A45
oklch(42.7% 0.083 9.4)
-
Step 900
900
#5F323A
oklch(37.7% 0.066 9.3)
-
Step 950
950 (this color)
#1B0509
oklch(15.9% 0.041 9.7)
#1B0509 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) | #090909 | 0.045 |
| Deuteranopia (no green cones) | #0F0E09 | 0.042 |
| Tritanopia (no blue cones) | #1E0306 | 0.011 |
| Achromatopsia (no color) | #0C0C0C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0509
#1B0509
oklch(15.9% 0.041 9.7)
- #00110F
#00110F
oklch(16% 0.028 186.1)
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 #1B0509, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.025
- Almost Black #070D0D ΔE 0.051
- Rich Navy #001219 ΔE 0.070
- Dark Maroon #3C0008 ΔE 0.084
- Rich Black #0D1B2A ΔE 0.088
- Very Dark Purple #2A0134 ΔE 0.095
- Deep Brown #410200 ΔE 0.098
- Midnight Purple #280137 ΔE 0.099
Use #1B0509 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.