#0F3768
Closest named color: Marine Blue (#01386A). oklch(33.9% 0.096 255.8), rgb(15, 55, 104).
Aa
White text reads best on this color (11.88:1).
About this color
#0F3768 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.096 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.008 away. White text reads best on it, at 11.88:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.76:1 |
| White text | 11.88:1 |
Values
| HEX | #0F3768 |
| RGB | rgb(15, 55, 104) |
| HSL | hsl(213, 75%, 23%) |
| OKLCH | oklch(33.9% 0.096 255.8) |
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 #0F3768 | 11.88:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #0F3768 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #0F3768 text on white | 11.88:1 | AAA | Lc 96.9 | Preferred for body text |
| #0F3768 text on black | 1.76:1 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF4
oklch(88.5% 0.04 255.3)
-
Step 300
300
#A2C3EF
oklch(80.8% 0.072 255.7)
-
Step 400
400
#6FA3E8
oklch(70.8% 0.116 255.8)
-
Step 500
500
#478AE1
oklch(63.1% 0.148 255.9)
-
Step 600
600
#2672CF
oklch(55.6% 0.161 255.9)
-
Step 700
700
#185FB3
oklch(49.1% 0.15 255.9)
-
Step 800
800
#174E91
oklch(42.7% 0.124 255.9)
-
Step 900
900 (this color)
#0F3768
oklch(33.9% 0.096 255.8)
-
Step 950
950
#102744
oklch(27.1% 0.062 255.3)
#0F3768 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) | #1D3B6A | 0.019 |
| Deuteranopia (no green cones) | #0A3367 | 0.013 |
| Tritanopia (no blue cones) | #00434A | 0.074 |
| Achromatopsia (no color) | #373737 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3768
#0F3768
oklch(33.9% 0.096 255.8)
- #4C3100
#4C3100
oklch(33.7% 0.071 75.5)
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 #0F3768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.008
- Prussian Blue #1D3557 ΔE 0.031
- Marine #042E60 ΔE 0.032
- Twilight Blue #0A437A ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.054
- Midnight Green #073B4C ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.065
- Gunmetal #293241 ΔE 0.071
Use #0F3768 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.