#170304
Closest named color: Very Dark Brown (#1D0200). oklch(14.2% 0.041 19.2), rgb(23, 3, 4).
Aa
White text reads best on this color (19.97:1).
About this color
#170304 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.041 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.020 away. White text reads best on it, at 19.97:1.
| Hue family | Reds |
| Lightness | very dark (14%) |
| Chroma | muted (0.041) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.97:1 |
Values
| HEX | #170304 |
| RGB | rgb(23, 3, 4) |
| HSL | hsl(357, 77%, 5%) |
| OKLCH | oklch(14.2% 0.041 19.2) |
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 #170304 | 19.97:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #170304 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #170304 text on white | 19.97:1 | AAA | Lc 105.7 | Preferred for body text |
| #170304 text on black | 1.05:1 | 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
#F3E6E6
oklch(93.5% 0.014 17.4)
-
Step 200
200
#EAD3D2
oklch(88.5% 0.026 20.6)
-
Step 300
300
#DEB5B4
oklch(80.9% 0.048 19.8)
-
Step 400
400
#CC8D8D
oklch(70.6% 0.077 19.2)
-
Step 500
500
#BE7071
oklch(63.1% 0.099 19.4)
-
Step 600
600
#A9575A
oklch(55.6% 0.108 18.9)
-
Step 700
700
#90474A
oklch(49% 0.099 18.8)
-
Step 800
800
#753B3D
oklch(42.7% 0.081 18.9)
-
Step 900
900
#5F3334
oklch(37.7% 0.064 19.1)
-
Step 950
950 (this color)
#170304
oklch(14.2% 0.041 19.2)
#170304 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) | #070604 | 0.043 |
| Deuteranopia (no green cones) | #0C0A04 | 0.040 |
| Tritanopia (no blue cones) | #1A0103 | 0.011 |
| Achromatopsia (no color) | #080808 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170304
#170304
oklch(14.2% 0.041 19.2)
- #000C0D
#000C0D
oklch(14% 0.024 200.1)
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 #170304, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.020
- Almost Black #070D0D ΔE 0.052
- Rich Navy #001219 ΔE 0.076
- Dark Maroon #3C0008 ΔE 0.097
- Rich Black #0D1B2A ΔE 0.102
- Midnight #03012D ΔE 0.108
- Very Dark Purple #2A0134 ΔE 0.110
- Deep Brown #410200 ΔE 0.111
Use #170304 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.