#100301
Closest named color: Very Dark Brown (#1D0200). oklch(12.4% 0.031 39), rgb(16, 3, 1).
Aa
White text reads best on this color (20.28:1).
About this color
#100301 is a very dark, muted red. In OKLCH its lightness is 12%, its chroma 0.031 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.035 away. White text reads best on it, at 20.28:1.
| Hue family | Reds |
| Lightness | very dark (12%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.03:1 |
| White text | 20.28:1 |
Values
| HEX | #100301 |
| RGB | rgb(16, 3, 1) |
| HSL | hsl(8, 88%, 3%) |
| OKLCH | oklch(12.4% 0.031 39) |
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 #100301 | 20.28:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #100301 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #100301 text on white | 20.28:1 | AAA | Lc 105.9 | Preferred for body text |
| #100301 text on black | 1.03:1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E8E5
oklch(93.7% 0.011 39.4)
-
Step 200
200
#E6D5CF
oklch(88.5% 0.021 40.5)
-
Step 300
300
#D7B9AF
oklch(80.9% 0.037 39.3)
-
Step 400
400
#C29486
oklch(70.6% 0.059 37.6)
-
Step 500
500
#B27A67
oklch(63.2% 0.076 39.5)
-
Step 600
600
#9D624F
oklch(55.6% 0.082 38.6)
-
Step 700
700
#86513F
oklch(49.1% 0.077 39.5)
-
Step 800
800
#6D4335
oklch(42.8% 0.063 39.2)
-
Step 900
900
#58382E
oklch(37.6% 0.049 38.1)
-
Step 950
950 (this color)
#100301
oklch(12.4% 0.031 39)
#100301 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) | #060401 | 0.029 |
| Deuteranopia (no green cones) | #090701 | 0.028 |
| Tritanopia (no blue cones) | #130202 | 0.012 |
| Achromatopsia (no color) | #060606 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100301
#100301
oklch(12.4% 0.031 39)
- #00080C
#00080C
oklch(12.4% 0.023 219.3)
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 #100301, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.035
- Almost Black #070D0D ΔE 0.049
- Rich Navy #001219 ΔE 0.077
- Midnight #03012D ΔE 0.112
- Rich Black #0D1B2A ΔE 0.113
- Dark Navy Blue #00022E ΔE 0.115
- Dark Maroon #3C0008 ΔE 0.118
- Dark Navy #000435 ΔE 0.125
Use #100301 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.