#0F1B3F
Closest named color: Navy Blue (#001146). oklch(23.5% 0.071 267), rgb(15, 27, 63).
Aa
White text reads best on this color (16.81:1).
About this color
#0F1B3F is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.071 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.041 away. White text reads best on it, at 16.81:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.81:1 |
Values
| HEX | #0F1B3F |
| RGB | rgb(15, 27, 63) |
| HSL | hsl(225, 62%, 15%) |
| OKLCH | oklch(23.5% 0.071 267) |
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 #0F1B3F | 16.81:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #0F1B3F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #0F1B3F text on white | 16.81:1 | AAA | Lc 103.6 | Preferred for body text |
| #0F1B3F text on black | 1.24:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8C0F8
oklch(81% 0.084 266.5)
-
Step 400
400
#7B9DF4
oklch(70.8% 0.133 266.8)
-
Step 500
500
#5B81F0
oklch(63.1% 0.172 267.2)
-
Step 600
600
#4268DE
oklch(55.6% 0.185 266.8)
-
Step 700
700
#3555C1
oklch(49% 0.173 267.2)
-
Step 800
800
#2C479C
oklch(42.8% 0.142 266.9)
-
Step 900
900
#273C7C
oklch(37.6% 0.112 267.2)
-
Step 950
950 (this color)
#0F1B3F
oklch(23.5% 0.071 267)
#0F1B3F 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) | #072040 | 0.017 |
| Deuteranopia (no green cones) | #001B3E | 0.018 |
| Tritanopia (no blue cones) | #00232A | 0.057 |
| Achromatopsia (no color) | #1D1D1D | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F1B3F
#0F1B3F
oklch(23.5% 0.071 267)
- #281C00
#281C00
oklch(23.5% 0.048 86.2)
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 #0F1B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.042
- Oxford Blue #1B263B ΔE 0.045
- Dark #1B2431 ΔE 0.049
- Dark Indigo #1F0954 ΔE 0.060
- Night Blue #040348 ΔE 0.066
- Jet #212529 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.078
Use #0F1B3F 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.