#0F1B38
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.059 265.2), rgb(15, 27, 56).
Aa
White text reads best on this color (17.01:1).
About this color
#0F1B38 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.059 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 17.01:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.01:1 |
Values
| HEX | #0F1B38 |
| RGB | rgb(15, 27, 56) |
| HSL | hsl(222, 58%, 14%) |
| OKLCH | oklch(22.9% 0.059 265.2) |
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 #0F1B38 | 17.01:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #0F1B38 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #0F1B38 text on white | 17.01:1 | AAA | Lc 103.8 | Preferred for body text |
| #0F1B38 text on black | 1.23:1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ABC1EF
oklch(81% 0.07 264.9)
-
Step 400
400
#7F9FE6
oklch(70.7% 0.111 265.2)
-
Step 500
500
#5F85DF
oklch(63.1% 0.142 265.3)
-
Step 600
600
#466DCD
oklch(55.6% 0.155 265.1)
-
Step 700
700
#385AB1
oklch(49% 0.144 265.4)
-
Step 800
800
#2E4A8F
oklch(42.6% 0.119 265.1)
-
Step 900
900
#293F72
oklch(37.7% 0.092 264.8)
-
Step 950
950 (this color)
#0F1B38
oklch(22.9% 0.059 265.2)
#0F1B38 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) | #0D1E39 | 0.010 |
| Deuteranopia (no green cones) | #071A37 | 0.011 |
| Tritanopia (no blue cones) | #002226 | 0.051 |
| Achromatopsia (no color) | #1C1C1C | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F1B38
#0F1B38
oklch(22.9% 0.059 265.2)
- #271B00
#271B00
oklch(23.1% 0.047 85.6)
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 #0F1B38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Dark #1B2431 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.043
- Navy Blue #001146 ΔE 0.048
- Jet #212529 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.071
- Night Blue #040348 ΔE 0.072
- Rich Navy #001219 ΔE 0.073
Use #0F1B38 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.