#0F3F68
Closest named color: Marine Blue (#01386A). oklch(35.9% 0.087 249), rgb(15, 63, 104).
Aa
White text reads best on this color (10.87:1).
About this color
#0F3F68 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.087 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.025 away. White text reads best on it, at 10.87:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #0F3F68 |
| RGB | rgb(15, 63, 104) |
| HSL | hsl(208, 75%, 23%) |
| OKLCH | oklch(35.9% 0.087 249) |
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 #0F3F68 | 10.87:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #0F3F68 | 1.93:1 | Fails | Lc 9.1 | Not readable |
| #0F3F68 text on white | 10.87:1 | AAA | Lc 94.8 | Preferred for body text |
| #0F3F68 text on black | 1.93:1 | Fails | Lc -7.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#A1C5E9
oklch(81% 0.064 248.6)
-
Step 400
400
#6BA6DF
oklch(70.8% 0.104 248.7)
-
Step 500
500
#3F8ED6
oklch(63.1% 0.133 249)
-
Step 600
600
#1677C3
oklch(55.7% 0.144 248.8)
-
Step 700
700
#0263A9
oklch(49% 0.135 249.3)
-
Step 800
800
#0B5189
oklch(42.6% 0.112 249.4)
-
Step 900
900 (this color)
#0F3F68
oklch(35.9% 0.087 249)
-
Step 950
950
#0E2840
oklch(27% 0.055 249)
#0F3F68 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) | #2C416A | 0.030 |
| Deuteranopia (no green cones) | #1E3967 | 0.020 |
| Tritanopia (no blue cones) | #00494E | 0.064 |
| Achromatopsia (no color) | #3D3D3D | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3F68
#0F3F68
oklch(35.9% 0.087 249)
- #573400
#573400
oklch(36% 0.078 69)
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 #0F3F68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.025
- Twilight Blue #0A437A ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.047
- Midnight Green #073B4C ΔE 0.050
- Charcoal #264653 ΔE 0.052
- Marine #042E60 ΔE 0.055
Use #0F3F68 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.