#0F3752
Closest named color: Prussian Blue (#1D3557). oklch(32.4% 0.065 242.5), rgb(15, 55, 82).
Aa
White text reads best on this color (12.43:1).
About this color
#0F3752 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.065 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.018 away. White text reads best on it, at 12.43:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.43:1 |
Values
| HEX | #0F3752 |
| RGB | rgb(15, 55, 82) |
| HSL | hsl(204, 69%, 19%) |
| OKLCH | oklch(32.4% 0.065 242.5) |
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 #0F3752 | 12.43:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #0F3752 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #0F3752 text on white | 12.43:1 | AAA | Lc 98.0 | Preferred for body text |
| #0F3752 text on black | 1.68:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A6C5DE
oklch(80.9% 0.049 242.6)
-
Step 400
400
#75A7CE
oklch(70.8% 0.078 242.6)
-
Step 500
500
#4E90C1
oklch(63% 0.1 242.7)
-
Step 600
600
#2F7AAD
oklch(55.7% 0.108 242.2)
-
Step 700
700
#206695
oklch(49% 0.101 242.8)
-
Step 800
800
#1D5479
oklch(42.8% 0.084 242.1)
-
Step 900
900 (this color)
#0F3752
oklch(32.4% 0.065 242.5)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#0F3752 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) | #2B3853 | 0.032 |
| Deuteranopia (no green cones) | #213152 | 0.025 |
| Tritanopia (no blue cones) | #003E41 | 0.045 |
| Achromatopsia (no color) | #343434 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3752
#0F3752
oklch(32.4% 0.065 242.5)
- #4B2B0A
#4B2B0A
oklch(32.3% 0.065 61.9)
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 #0F3752, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.018
- Midnight Green #073B4C ΔE 0.020
- Dark Blue Grey #1F3B4D ΔE 0.024
- Gunmetal #293241 ΔE 0.039
- Marine Blue #01386A ΔE 0.042
- Marine #042E60 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.046
- Onyx #343A40 ΔE 0.056
Use #0F3752 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.