#0F3877
Closest named color: Marine Blue (#01386A). oklch(35.3% 0.117 259.3), rgb(15, 56, 119).
Aa
White text reads best on this color (11.33:1).
About this color
#0F3877 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.117 and its hue 259°. 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 11.33:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.85:1 |
| White text | 11.33:1 |
Values
| HEX | #0F3877 |
| RGB | rgb(15, 56, 119) |
| HSL | hsl(216, 78%, 26%) |
| OKLCH | oklch(35.3% 0.117 259.3) |
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 #0F3877 | 11.33:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #0F3877 | 1.85:1 | Fails | Lc 8.2 | Not readable |
| #0F3877 text on white | 11.33:1 | AAA | Lc 95.7 | Preferred for body text |
| #0F3877 text on black | 1.85:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9FC2FA
oklch(80.9% 0.088 259.7)
-
Step 400
400
#6AA0F7
oklch(70.6% 0.14 259.6)
-
Step 500
500
#4086F4
oklch(63.2% 0.179 259.2)
-
Step 600
600
#1D6CE3
oklch(55.6% 0.196 259.4)
-
Step 700
700
#0F59C5
oklch(49% 0.182 259.4)
-
Step 800
800
#114A9F
oklch(42.7% 0.15 259.2)
-
Step 900
900 (this color)
#0F3877
oklch(35.3% 0.117 259.3)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#0F3877 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) | #0E3F79 | 0.020 |
| Deuteranopia (no green cones) | #003676 | 0.011 |
| Tritanopia (no blue cones) | #004752 | 0.088 |
| Achromatopsia (no color) | #3A3A3A | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3877
#0F3877
oklch(35.3% 0.117 259.3)
- #4F3600
#4F3600
oklch(35.3% 0.073 79.9)
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 #0F3877, 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 0.032
- Marine #042E60 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.056
- Cobalt #1E488F ΔE 0.062
- Light Navy #155084 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.076
- Midnight Blue #191970 ΔE 0.077
Use #0F3877 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.