#000817
Closest named color: Almost Black (#070D0D). oklch(13.3% 0.039 251.5), rgb(0, 8, 23).
Aa
White text reads best on this color (20.05:1).
About this color
#000817 is a very dark, muted blue. In OKLCH its lightness is 13%, its chroma 0.039 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.039 away. White text reads best on it, at 20.05:1.
| Hue family | Blues |
| Lightness | very dark (13%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.04:1 |
| White text | 20.05:1 |
Values
| HEX | #000817 |
| RGB | rgb(0, 8, 23) |
| HSL | hsl(219, 100%, 5%) |
| OKLCH | oklch(13.3% 0.039 251.5) |
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 #000817 | 20.05:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #000817 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #000817 text on white | 20.05:1 | AAA | Lc 105.9 | Preferred for body text |
| #000817 text on black | 1.04:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ABC3DE
oklch(80.8% 0.046 251.5)
-
Step 400
400
#7EA4CE
oklch(70.6% 0.075 251.4)
-
Step 500
500
#5D8DC1
oklch(63.1% 0.095 251.4)
-
Step 600
600
#4276AE
oklch(55.5% 0.104 251.8)
-
Step 700
700
#346395
oklch(49% 0.096 251.6)
-
Step 800
800
#2C5179
oklch(42.7% 0.079 251.8)
-
Step 900
900
#284362
oklch(37.6% 0.063 252.8)
-
Step 950
950 (this color)
#000817
oklch(13.3% 0.039 251.5)
#000817 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) | #030918 | 0.011 |
| Deuteranopia (no green cones) | #000717 | 0.005 |
| Tritanopia (no blue cones) | #000C0E | 0.029 |
| Achromatopsia (no color) | #080808 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #000817
#000817
oklch(13.3% 0.039 251.5)
- #0F0600
#0F0600
oklch(13.4% 0.029 71.2)
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 #000817, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.039
- Rich Navy #001219 ΔE 0.041
- Dark Navy Blue #00022E ΔE 0.053
- Midnight #03012D ΔE 0.053
- Very Dark Blue #000133 ΔE 0.063
- Dark Navy #000435 ΔE 0.064
- Rich Black #0D1B2A ΔE 0.084
- Very Dark Brown #1D0200 ΔE 0.090
Use #000817 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.