#1F0103
Closest named color: Very Dark Brown (#1D0200). oklch(15.4% 0.058 20.8), rgb(31, 1, 3).
Aa
White text reads best on this color (19.73:1).
About this color
#1F0103 is a very dark, muted red. In OKLCH its lightness is 15%, its chroma 0.058 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.014 away. White text reads best on it, at 19.73:1.
| Hue family | Reds |
| Lightness | very dark (15%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.06:1 |
| White text | 19.73:1 |
Values
| HEX | #1F0103 |
| RGB | rgb(31, 1, 3) |
| HSL | hsl(356, 94%, 6%) |
| OKLCH | oklch(15.4% 0.058 20.8) |
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 #1F0103 | 19.73:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #1F0103 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #1F0103 text on white | 19.73:1 | AAA | Lc 105.4 | Preferred for body text |
| #1F0103 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E4
oklch(93.6% 0.02 21.4)
-
Step 200
200
#F1D0CE
oklch(88.5% 0.037 22)
-
Step 300
300
#EAB0AE
oklch(81% 0.068 20.9)
-
Step 400
400
#DC8483
oklch(70.6% 0.109 20.9)
-
Step 500
500
#D06264
oklch(63% 0.14 20.8)
-
Step 600
600
#BC464B
oklch(55.7% 0.152 21.1)
-
Step 700
700
#A1373D
oklch(49.1% 0.14 20.7)
-
Step 800
800
#832E32
oklch(42.7% 0.117 20.8)
-
Step 900
900
#6A2A2C
oklch(37.7% 0.092 20.7)
-
Step 950
950 (this color)
#1F0103
oklch(15.4% 0.058 20.8)
#1F0103 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) | #070603 | 0.065 |
| Deuteranopia (no green cones) | #100D02 | 0.058 |
| Tritanopia (no blue cones) | #230002 | 0.011 |
| Achromatopsia (no color) | #0B0B0B | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F0103
#1F0103
oklch(15.4% 0.058 20.8)
- #000F11
#000F11
oklch(15.4% 0.026 204.2)
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 #1F0103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.014
- Almost Black #070D0D ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.078
- Rich Navy #001219 ΔE 0.089
- Deep Brown #410200 ΔE 0.092
- Very Dark Purple #2A0134 ΔE 0.104
- Rich Black #0D1B2A ΔE 0.106
- Dark Brown #341C02 ΔE 0.107
Use #1F0103 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.