#1C0309
Closest named color: Very Dark Brown (#1D0200). oklch(15.5% 0.048 6.3), rgb(28, 3, 9).
Aa
White text reads best on this color (19.69:1).
About this color
#1C0309 is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.048 and its hue 6°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.026 away. White text reads best on it, at 19.69:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.06:1 |
| White text | 19.69:1 |
Values
| HEX | #1C0309 |
| RGB | rgb(28, 3, 9) |
| HSL | hsl(346, 81%, 6%) |
| OKLCH | oklch(15.5% 0.048 6.3) |
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 #1C0309 | 19.69:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1C0309 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #1C0309 text on white | 19.69:1 | AAA | Lc 105.5 | Preferred for body text |
| #1C0309 text on black | 1.06:1 | 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
#FAF3F4
oklch(97% 0.008 7.3)
-
Step 100
100
#F4E6E8
oklch(93.7% 0.015 7.5)
-
Step 200
200
#EDD1D6
oklch(88.5% 0.032 5.6)
-
Step 300
300
#E2B2BB
oklch(80.9% 0.057 5.9)
-
Step 400
400
#D28897
oklch(70.7% 0.092 6.5)
-
Step 500
500
#C4697E
oklch(63.1% 0.117 6.3)
-
Step 600
600
#AF4F67
oklch(55.6% 0.127 6.5)
-
Step 700
700
#963F56
oklch(49% 0.119 6)
-
Step 800
800
#7A3546
oklch(42.7% 0.098 6.7)
-
Step 900
900
#632F3B
oklch(37.8% 0.076 6.8)
-
Step 950
950 (this color)
#1C0309
oklch(15.5% 0.048 6.3)
#1C0309 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) | #070809 | 0.055 |
| Deuteranopia (no green cones) | #0E0D08 | 0.050 |
| Tritanopia (no blue cones) | #1F0105 | 0.012 |
| Achromatopsia (no color) | #0B0B0B | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C0309
#1C0309
oklch(15.5% 0.048 6.3)
- #00100E
#00100E
oklch(15.6% 0.027 185.8)
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 #1C0309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.026
- Almost Black #070D0D ΔE 0.058
- Rich Navy #001219 ΔE 0.077
- Dark Maroon #3C0008 ΔE 0.083
- Very Dark Purple #2A0134 ΔE 0.093
- Rich Black #0D1B2A ΔE 0.095
- Midnight Purple #280137 ΔE 0.097
- Deep Brown #410200 ΔE 0.099
Use #1C0309 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.