#0F5591
Closest named color: Dusk Blue (#26538D). oklch(44.2% 0.118 250.4), rgb(15, 85, 145).
Aa
White text reads best on this color (7.69:1).
About this color
#0F5591 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.118 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.69:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #0F5591 |
| RGB | rgb(15, 85, 145) |
| HSL | hsl(208, 81%, 31%) |
| OKLCH | oklch(44.2% 0.118 250.4) |
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 #0F5591 | 7.69:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #0F5591 | 2.72:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #0F5591 text on white | 7.69:1 | AAA | Lc 86.2 | Fine for body text |
| #0F5591 text on black | 2.72:1 | Fails | Lc -15.8 | Dividers and decoration only |
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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#A0C5EC
oklch(81% 0.068 250)
-
Step 400
400
#6AA5E3
oklch(70.7% 0.11 250.8)
-
Step 500
500
#3D8DDB
oklch(63.1% 0.141 250.6)
-
Step 600
600
#1076C8
oklch(55.7% 0.152 250.1)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800 (this color)
#0F5591
oklch(44.2% 0.118 250.4)
-
Step 900
900
#134370
oklch(37.6% 0.092 250.7)
-
Step 950
950
#0D2842
oklch(27.1% 0.059 250.2)
#0F5591 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) | #375993 | 0.035 |
| Deuteranopia (no green cones) | #214E90 | 0.021 |
| Tritanopia (no blue cones) | #00636C | 0.084 |
| Achromatopsia (no color) | #535353 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F5591
#0F5591
oklch(44.2% 0.118 250.4)
- #744800
#744800
oklch(44.2% 0.096 70.1)
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 #0F5591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Light Navy #155084 ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.042
- Peacock Blue #016795 ΔE 0.053
- Denim #3B638C ΔE 0.060
Use #0F5591 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.