#170307
Closest named color: Very Dark Brown (#1D0200). oklch(14.3% 0.041 7.2), rgb(23, 3, 7).
Aa
White text reads best on this color (19.95:1).
About this color
#170307 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.041 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.027 away. White text reads best on it, at 19.95:1.
| 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 | 19.95:1 |
Values
| HEX | #170307 |
| RGB | rgb(23, 3, 7) |
| HSL | hsl(348, 77%, 5%) |
| OKLCH | oklch(14.3% 0.041 7.2) |
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 #170307 | 19.95:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #170307 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #170307 text on white | 19.95:1 | AAA | Lc 105.7 | Preferred for body text |
| #170307 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
#FAF4F5
oklch(97.2% 0.007 5.6)
-
Step 100
100
#F3E6E8
oklch(93.6% 0.014 6.7)
-
Step 200
200
#EAD2D6
oklch(88.5% 0.027 6.2)
-
Step 300
300
#DDB4BB
oklch(80.8% 0.048 6.7)
-
Step 400
400
#CB8D98
oklch(70.8% 0.077 7.5)
-
Step 500
500
#BC6F7F
oklch(63% 0.099 6.9)
-
Step 600
600
#A75668
oklch(55.5% 0.108 7.1)
-
Step 700
700
#8F4657
oklch(49.1% 0.1 6.7)
-
Step 800
800
#743A47
oklch(42.6% 0.082 6.9)
-
Step 900
900
#5E323B
oklch(37.6% 0.064 7.5)
-
Step 950
950 (this color)
#170307
oklch(14.3% 0.041 7.2)
#170307 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) | #060607 | 0.045 |
| Deuteranopia (no green cones) | #0B0A07 | 0.041 |
| Tritanopia (no blue cones) | #1A0204 | 0.011 |
| Achromatopsia (no color) | #090909 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170307
#170307
oklch(14.3% 0.041 7.2)
- #000D0B
#000D0B
oklch(14.3% 0.025 184.8)
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 #170307, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.027
- Almost Black #070D0D ΔE 0.052
- Rich Navy #001219 ΔE 0.074
- Dark Maroon #3C0008 ΔE 0.097
- Rich Black #0D1B2A ΔE 0.099
- Midnight #03012D ΔE 0.101
- Very Dark Purple #2A0134 ΔE 0.103
- Midnight Purple #280137 ΔE 0.106
Use #170307 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.