#0F3153
Closest named color: Prussian Blue (#1D3557). oklch(30.8% 0.073 251.4), rgb(15, 49, 83).
Aa
White text reads best on this color (13.25:1).
About this color
#0F3153 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.073 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.021 away. White text reads best on it, at 13.25:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.58:1 |
| White text | 13.25:1 |
Values
| HEX | #0F3153 |
| RGB | rgb(15, 49, 83) |
| HSL | hsl(210, 69%, 19%) |
| OKLCH | oklch(30.8% 0.073 251.4) |
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 #0F3153 | 13.25:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #0F3153 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #0F3153 text on white | 13.25:1 | AAA | Lc 99.4 | Preferred for body text |
| #0F3153 text on black | 1.58:1 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF8
oklch(88.5% 0.047 251.3)
-
Step 300
300
#98C5F7
oklch(81% 0.086 251.5)
-
Step 400
400
#5AA5F3
oklch(70.8% 0.137 251.2)
-
Step 500
500
#1A8BEF
oklch(63% 0.177 251.6)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950 (this color)
#0F3153
oklch(30.8% 0.073 251.4)
#0F3153 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) | #213354 | 0.021 |
| Deuteranopia (no green cones) | #172D52 | 0.013 |
| Tritanopia (no blue cones) | #00393E | 0.054 |
| Achromatopsia (no color) | #303030 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3153
#0F3153
oklch(30.8% 0.073 251.4)
- #442900
#442900
oklch(30.7% 0.066 71.4)
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 #0F3153, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.021
- Marine #042E60 ΔE 0.028
- Midnight Green #073B4C ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.042
- Marine Blue #01386A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.043
- Gunmetal #293241 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.050
Use #0F3153 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.