#0F599D
Closest named color: Dusk Blue (#26538D). oklch(46% 0.129 252), rgb(15, 89, 157).
Aa
White text reads best on this color (7.15:1).
About this color
#0F599D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.129 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.029 away. White text reads best on it, at 7.15:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.93:1 |
| White text | 7.15:1 |
Values
| HEX | #0F599D |
| RGB | rgb(15, 89, 157) |
| HSL | hsl(209, 83%, 34%) |
| OKLCH | oklch(46% 0.129 252) |
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 #0F599D | 7.15:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #0F599D | 2.93:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #0F599D text on white | 7.15:1 | AAA | Lc 84.3 | Fine for body text |
| #0F599D text on black | 2.93:1 | Fails | Lc -17.7 | 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 700.
-
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
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E9
oklch(80.9% 0.063 252.3)
-
Step 400
400
#72A4DD
oklch(70.6% 0.1 252.4)
-
Step 500
500
#4A8DD4
oklch(63.2% 0.127 251.7)
-
Step 600
600
#2A75C1
oklch(55.5% 0.139 252.1)
-
Step 700
700 (this color)
#0F599D
oklch(46% 0.129 252)
-
Step 800
800
#1A5087
oklch(42.6% 0.107 252.2)
-
Step 900
900
#1C436C
oklch(37.7% 0.083 251.9)
-
Step 950
950
#12283F
oklch(27.1% 0.051 251.2)
#0F599D 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) | #365EA0 | 0.034 |
| Deuteranopia (no green cones) | #1B529C | 0.019 |
| Tritanopia (no blue cones) | #006973 | 0.094 |
| Achromatopsia (no color) | #585858 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F599D
#0F599D
oklch(46% 0.129 252)
- #794D00
#794D00
oklch(45.9% 0.098 71.9)
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 #0F599D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.039
- Light Navy #155084 ΔE 0.045
- Peacock Blue #016795 ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.046
- Cobalt #1E488F ΔE 0.050
- Dusky Blue #475F94 ΔE 0.055
Use #0F599D 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.