#0F1333
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.063 274.1), rgb(15, 19, 51).
Aa
White text reads best on this color (18.08:1).
About this color
#0F1333 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.063 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.08:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.08:1 |
Values
| HEX | #0F1333 |
| RGB | rgb(15, 19, 51) |
| HSL | hsl(233, 55%, 13%) |
| OKLCH | oklch(20.4% 0.063 274.1) |
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 #0F1333 | 18.08:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0F1333 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #0F1333 text on white | 18.08:1 | AAA | Lc 104.7 | Preferred for body text |
| #0F1333 text on black | 1.16:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#8A9AEA
oklch(70.6% 0.119 274.4)
-
Step 500
500
#6E7FE4
oklch(63% 0.152 274)
-
Step 600
600
#5866D2
oklch(55.6% 0.165 274.2)
-
Step 700
700
#4854B6
oklch(49% 0.154 274)
-
Step 800
800
#3B4593
oklch(42.6% 0.127 274.2)
-
Step 900
900
#323B75
oklch(37.6% 0.099 274)
-
Step 950
950 (this color)
#0F1333
oklch(20.4% 0.063 274.1)
#0F1333 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) | #031834 | 0.021 |
| Deuteranopia (no green cones) | #001532 | 0.022 |
| Tritanopia (no blue cones) | #001A20 | 0.054 |
| Achromatopsia (no color) | #161616 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F1333
#0F1333
oklch(20.4% 0.063 274.1)
- #1D1600
#1D1600
oklch(20.3% 0.042 93.7)
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 #0F1333, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.043
- Dark Navy #000435 ΔE 0.057
- Night Blue #040348 ΔE 0.059
- Rich Navy #001219 ΔE 0.061
- Dark #1B2431 ΔE 0.065
- Midnight Purple #280137 ΔE 0.067
- Midnight #03012D ΔE 0.067
Use #0F1333 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.