#010D17
Closest named color: Rich Navy (#001219). oklch(15.2% 0.031 239.1), rgb(1, 13, 23).
Aa
White text reads best on this color (19.60:1).
About this color
#010D17 is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.031 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.020 away. White text reads best on it, at 19.60:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.07:1 |
| White text | 19.60:1 |
Values
| HEX | #010D17 |
| RGB | rgb(1, 13, 23) |
| HSL | hsl(207, 92%, 5%) |
| OKLCH | oklch(15.2% 0.031 239.1) |
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 #010D17 | 19.60:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #010D17 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #010D17 text on white | 19.60:1 | AAA | Lc 105.7 | Preferred for body text |
| #010D17 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ACC4D6
oklch(80.8% 0.036 240.4)
-
Step 400
400
#7FA6C1
oklch(70.6% 0.058 238.9)
-
Step 500
500
#5E90B2
oklch(63.1% 0.074 239.2)
-
Step 600
600
#437A9E
oklch(55.7% 0.081 239.2)
-
Step 700
700
#346687
oklch(49% 0.076 239.7)
-
Step 800
800
#2C546E
oklch(42.8% 0.063 239)
-
Step 900
900
#284559
oklch(37.7% 0.049 240)
-
Step 950
950 (this color)
#010D17
oklch(15.2% 0.031 239.1)
#010D17 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) | #080D17 | 0.016 |
| Deuteranopia (no green cones) | #050B17 | 0.011 |
| Tritanopia (no blue cones) | #001010 | 0.023 |
| Achromatopsia (no color) | #0C0C0C | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010D17
#010D17
oklch(15.2% 0.031 239.1)
- #150801
#150801
oklch(15.2% 0.031 59.9)
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 #010D17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.020
- Almost Black #070D0D ΔE 0.024
- Dark Navy Blue #00022E ΔE 0.064
- Midnight #03012D ΔE 0.065
- Rich Black #0D1B2A ΔE 0.067
- Dark Navy #000435 ΔE 0.069
- Very Dark Blue #000133 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.083
Use #010D17 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.