#010F18
Closest named color: Rich Navy (#001219). oklch(15.9% 0.03 233.9), rgb(1, 15, 24).
Aa
White text reads best on this color (19.39:1).
About this color
#010F18 is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.030 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.012 away. White text reads best on it, at 19.39:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.08:1 |
| White text | 19.39:1 |
Values
| HEX | #010F18 |
| RGB | rgb(1, 15, 24) |
| HSL | hsl(203, 92%, 5%) |
| OKLCH | oklch(15.9% 0.03 233.9) |
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 #010F18 | 19.39:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #010F18 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #010F18 text on white | 19.39:1 | AAA | Lc 105.6 | Preferred for body text |
| #010F18 text on black | 1.08:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D5
oklch(80.9% 0.036 234.9)
-
Step 400
400
#7DA7BF
oklch(70.6% 0.057 233.7)
-
Step 500
500
#5A91AF
oklch(63% 0.074 233.5)
-
Step 600
600
#3F7B9B
oklch(55.6% 0.08 234)
-
Step 700
700
#306884
oklch(49.2% 0.074 232.8)
-
Step 800
800
#29556C
oklch(42.9% 0.062 233.6)
-
Step 900
900
#264657
oklch(37.7% 0.048 233.2)
-
Step 950
950 (this color)
#010F18
oklch(15.9% 0.03 233.9)
#010F18 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) | #0B0F18 | 0.020 |
| Deuteranopia (no green cones) | #070C18 | 0.016 |
| Tritanopia (no blue cones) | #001112 | 0.018 |
| Achromatopsia (no color) | #0D0D0D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010F18
#010F18
oklch(15.9% 0.03 233.9)
- #170902
#170902
oklch(15.9% 0.031 55.3)
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 #010F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.012
- Almost Black #070D0D ΔE 0.024
- Rich Black #0D1B2A ΔE 0.060
- Dark Navy Blue #00022E ΔE 0.067
- Midnight #03012D ΔE 0.068
- Dark Navy #000435 ΔE 0.071
- Very Dark Blue #000133 ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.084
Use #010F18 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.