#010D18
Closest named color: Rich Navy (#001219). oklch(15.2% 0.032 241.6), rgb(1, 13, 24).
Aa
White text reads best on this color (19.58:1).
About this color
#010D18 is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.032 and its hue 242°. 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 19.58:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.07:1 |
| White text | 19.58:1 |
Values
| HEX | #010D18 |
| RGB | rgb(1, 13, 24) |
| HSL | hsl(209, 92%, 5%) |
| OKLCH | oklch(15.2% 0.032 241.6) |
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 #010D18 | 19.58:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #010D18 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #010D18 text on white | 19.58:1 | AAA | Lc 105.7 | Preferred for body text |
| #010D18 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ACC4D8
oklch(80.9% 0.039 243.3)
-
Step 400
400
#7FA6C4
oklch(70.7% 0.061 241.8)
-
Step 500
500
#5D90B5
oklch(63.2% 0.078 241.1)
-
Step 600
600
#4279A1
oklch(55.6% 0.086 242.1)
-
Step 700
700
#33668A
oklch(49.1% 0.08 241.6)
-
Step 800
800
#2B5370
oklch(42.6% 0.066 242)
-
Step 900
900
#28455A
oklch(37.7% 0.05 241.3)
-
Step 950
950 (this color)
#010D18
oklch(15.2% 0.032 241.6)
#010D18 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) | #080D18 | 0.016 |
| Deuteranopia (no green cones) | #050B18 | 0.011 |
| Tritanopia (no blue cones) | #001011 | 0.022 |
| Achromatopsia (no color) | #0C0C0C | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010D18
#010D18
oklch(15.2% 0.032 241.6)
- #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 #010D18, 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 0.026
- Dark Navy Blue #00022E ΔE 0.062
- Midnight #03012D ΔE 0.063
- Rich Black #0D1B2A ΔE 0.066
- Dark Navy #000435 ΔE 0.067
- Very Dark Blue #000133 ΔE 0.070
- Very Dark Brown #1D0200 ΔE 0.084
Use #010D18 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.