#0F4FA4
Closest named color: Cobalt (#1E488F). oklch(44.2% 0.151 258), rgb(15, 79, 164).
Aa
White text reads best on this color (7.85:1).
About this color
#0F4FA4 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.151 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.037 away. White text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #0F4FA4 |
| RGB | rgb(15, 79, 164) |
| HSL | hsl(214, 83%, 35%) |
| OKLCH | oklch(44.2% 0.151 258) |
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 #0F4FA4 | 7.85:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #0F4FA4 | 2.67:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #0F4FA4 text on white | 7.85:1 | AAA | Lc 86.6 | Fine for body text |
| #0F4FA4 text on black | 2.67:1 | Fails | Lc -15.5 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9DC3FA
oklch(81% 0.088 257.6)
-
Step 400
400
#67A1F7
oklch(70.7% 0.141 258.1)
-
Step 500
500
#3B87F4
oklch(63.2% 0.18 258)
-
Step 600
600
#116DE2
oklch(55.5% 0.195 257.9)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800 (this color)
#0F4FA4
oklch(44.2% 0.151 258)
-
Step 900
900
#123F7E
oklch(37.6% 0.117 258)
-
Step 950
950
#0C264A
oklch(27.1% 0.074 257.4)
#0F4FA4 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) | #1459A7 | 0.028 |
| Deuteranopia (no green cones) | #004CA2 | 0.011 |
| Tritanopia (no blue cones) | #006472 | 0.114 |
| Achromatopsia (no color) | #525252 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4FA4
#0F4FA4
oklch(44.2% 0.151 258)
- #6F4B00
#6F4B00
oklch(44.2% 0.092 77.2)
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 #0F4FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.043
- Light Navy #155084 ΔE 0.053
- Sapphire #2138AB ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.062
- Blueberry #464196 ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.064
Use #0F4FA4 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.