#0F101F
Closest named color: Rich Navy (#001219). oklch(18% 0.031 279.9), rgb(15, 16, 31).
Aa
White text reads best on this color (18.84:1).
About this color
#0F101F is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.031 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.032 away. White text reads best on it, at 18.84:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.84:1 |
Values
| HEX | #0F101F |
| RGB | rgb(15, 16, 31) |
| HSL | hsl(236, 35%, 9%) |
| OKLCH | oklch(18% 0.031 279.9) |
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 #0F101F | 18.84:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #0F101F | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #0F101F text on white | 18.84:1 | AAA | Lc 105.3 | Preferred for body text |
| #0F101F text on black | 1.11:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BBBFD8
oklch(80.9% 0.035 278.4)
-
Step 400
400
#999DC5
oklch(70.7% 0.058 280.3)
-
Step 500
500
#8085B6
oklch(63.1% 0.074 279.5)
-
Step 600
600
#6A6EA2
oklch(55.6% 0.081 280)
-
Step 700
700
#585C8B
oklch(49.2% 0.075 279.5)
-
Step 800
800
#484B71
oklch(42.7% 0.063 279.9)
-
Step 900
900
#3C3F5B
oklch(37.7% 0.048 279.1)
-
Step 950
950 (this color)
#0F101F
oklch(18% 0.031 279.9)
#0F101F 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) | #0B1220 | 0.009 |
| Deuteranopia (no green cones) | #0A111F | 0.009 |
| Tritanopia (no blue cones) | #0A1316 | 0.026 |
| Achromatopsia (no color) | #111111 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F101F
#0F101F
oklch(18% 0.031 279.9)
- #151203
#151203
oklch(18.1% 0.03 99.6)
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 #0F101F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.032
- Rich Black #0D1B2A ΔE 0.041
- Almost Black #070D0D ΔE 0.042
- Midnight #03012D ΔE 0.069
- Dark Navy #000435 ΔE 0.070
- Dark Navy Blue #00022E ΔE 0.071
- Very Dark Blue #000133 ΔE 0.077
- Very Dark Brown #1D0200 ΔE 0.078
Use #0F101F 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.