#00100A
Closest named color: Almost Black (#070D0D). oklch(15.4% 0.03 170.2), rgb(0, 16, 10).
Aa
White text reads best on this color (19.47:1).
About this color
#00100A is a very dark, muted teal or cyan. In OKLCH its lightness is 15%, its chroma 0.030 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.022 away. White text reads best on it, at 19.47:1.
| Hue family | Teals and cyans |
| Lightness | very dark (15%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.07:1 |
| White text | 19.47:1 |
Values
| HEX | #00100A |
| RGB | rgb(0, 16, 10) |
| HSL | hsl(158, 100%, 3%) |
| OKLCH | oklch(15.4% 0.03 170.2) |
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 #00100A | 19.47:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #00100A | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #00100A text on white | 19.47:1 | AAA | Lc 105.6 | Preferred for body text |
| #00100A 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED7
oklch(88.6% 0.021 169.3)
-
Step 300
300
#ABC9BD
oklch(81% 0.036 169.3)
-
Step 400
400
#7CAD9B
oklch(70.8% 0.059 169.8)
-
Step 500
500
#599883
oklch(63.1% 0.073 170.5)
-
Step 600
600
#3C826C
oklch(55.5% 0.079 170.3)
-
Step 700
700
#2D6E5A
oklch(49% 0.074 170.1)
-
Step 800
800
#275A4A
oklch(42.7% 0.062 170.2)
-
Step 900
900
#254A3E
oklch(37.7% 0.048 170.5)
-
Step 950
950 (this color)
#00100A
oklch(15.4% 0.03 170.2)
#00100A 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) | #0F0E0A | 0.031 |
| Deuteranopia (no green cones) | #0C0C0A | 0.029 |
| Tritanopia (no blue cones) | #00100E | 0.009 |
| Achromatopsia (no color) | #0D0D0D | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00100A
#00100A
oklch(15.4% 0.03 170.2)
- #15070E
#15070E
oklch(15.5% 0.029 349)
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 #00100A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.022
- Rich Navy #001219 ΔE 0.031
- Rich Black #0D1B2A ΔE 0.077
- Very Dark Brown #1D0200 ΔE 0.079
- Dark Navy Blue #00022E ΔE 0.097
- Midnight #03012D ΔE 0.099
- Dark Navy #000435 ΔE 0.102
- Very Dark Blue #000133 ΔE 0.105
Use #00100A 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.