#0F4985
Closest named color: Cobalt (#1E488F). oklch(40.5% 0.115 253.6), rgb(15, 73, 133).
Aa
White text reads best on this color (9.08:1).
About this color
#0F4985 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.115 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.020 away. White text reads best on it, at 9.08:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.31:1 |
| White text | 9.08:1 |
Values
| HEX | #0F4985 |
| RGB | rgb(15, 73, 133) |
| HSL | hsl(211, 80%, 29%) |
| OKLCH | oklch(40.5% 0.115 253.6) |
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 #0F4985 | 9.08:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #0F4985 | 2.31:1 | Fails | Lc 13.6 | Not readable |
| #0F4985 text on white | 9.08:1 | AAA | Lc 90.4 | Preferred for body text |
| #0F4985 text on black | 2.31:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A3C4EC
oklch(81% 0.067 253.5)
-
Step 400
400
#70A4E3
oklch(70.8% 0.108 253.9)
-
Step 500
500
#478CDA
oklch(63.1% 0.137 253.2)
-
Step 600
600
#2674C8
oklch(55.6% 0.15 253.6)
-
Step 700
700
#1861AD
oklch(49.2% 0.139 253.6)
-
Step 800
800 (this color)
#0F4985
oklch(40.5% 0.115 253.6)
-
Step 900
900
#1A4270
oklch(37.6% 0.091 254)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#0F4985 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) | #2A4E87 | 0.028 |
| Deuteranopia (no green cones) | #114484 | 0.014 |
| Tritanopia (no blue cones) | #005760 | 0.085 |
| Achromatopsia (no color) | #484848 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4985
#0F4985
oklch(40.5% 0.115 253.6)
- #644000
#644000
oklch(40.3% 0.086 73.3)
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 #0F4985, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.020
- Light Navy #155084 ΔE 0.022
- Twilight Blue #0A437A ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.034
- Dusk Blue #26538D ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.060
- Marine Blue #01386A ΔE 0.067
- Blueberry #464196 ΔE 0.068
Use #0F4985 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.