#100C03
Closest named color: Almost Black (#070D0D). oklch(15.6% 0.022 90.5), rgb(16, 12, 3).
Aa
White text reads best on this color (19.51:1).
About this color
#100C03 is a very dark close to neutral grey. In OKLCH its lightness is 16%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.027 away. White text reads best on it, at 19.51:1.
| Hue family | Neutrals |
| Lightness | very dark (16%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.07:1 |
| White text | 19.51:1 |
Values
| HEX | #100C03 |
| RGB | rgb(16, 12, 3) |
| HSL | hsl(42, 68%, 4%) |
| OKLCH | oklch(15.6% 0.022 90.5) |
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 #100C03 | 19.51:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #100C03 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #100C03 text on white | 19.51:1 | AAA | Lc 105.7 | Preferred for body text |
| #100C03 text on black | 1.07:1 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECEAE4
oklch(93.7% 0.008 91.5)
-
Step 200
200
#DDD9CF
oklch(88.6% 0.014 88.7)
-
Step 300
300
#C7C0AE
oklch(80.9% 0.026 89.2)
-
Step 400
400
#AAA083
oklch(70.7% 0.042 91.3)
-
Step 500
500
#968964
oklch(63.2% 0.054 91)
-
Step 600
600
#80724B
oklch(55.5% 0.058 90.5)
-
Step 700
700
#6C603C
oklch(49.1% 0.055 91.7)
-
Step 800
800
#584E32
oklch(42.6% 0.045 90.6)
-
Step 900
900
#49412C
oklch(37.7% 0.035 89.6)
-
Step 950
950 (this color)
#100C03
oklch(15.6% 0.022 90.5)
#100C03 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) | #0E0C03 | 0.004 |
| Deuteranopia (no green cones) | #0F0D03 | 0.004 |
| Tritanopia (no blue cones) | #120A09 | 0.020 |
| Achromatopsia (no color) | #0C0C0C | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100C03
#100C03
oklch(15.6% 0.022 90.5)
- #090C16
#090C16
oklch(15.7% 0.022 270.8)
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 #100C03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.027
- Very Dark Brown #1D0200 ΔE 0.046
- Rich Navy #001219 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.084
- Dark Brown #341C02 ΔE 0.104
- Dark Maroon #3C0008 ΔE 0.110
- Jet #212529 ΔE 0.111
- Midnight #03012D ΔE 0.111
Use #100C03 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.