#0F50B0
Closest named color: Blue Blue (#2242C7). oklch(45.4% 0.166 259.4), rgb(15, 80, 176).
Aa
White text reads best on this color (7.51:1).
About this color
#0F50B0 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.166 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.049 away. White text reads best on it, at 7.51:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #0F50B0 |
| RGB | rgb(15, 80, 176) |
| HSL | hsl(216, 84%, 37%) |
| OKLCH | oklch(45.4% 0.166 259.4) |
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 #0F50B0 | 7.51:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #0F50B0 | 2.79:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #0F50B0 text on white | 7.51:1 | AAA | Lc 85.4 | Fine for body text |
| #0F50B0 text on black | 2.79:1 | Fails | Lc -16.6 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFD
oklch(88.5% 0.053 258)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#64A0FF
oklch(70.8% 0.153 259.2)
-
Step 500
500
#3684FE
oklch(63.1% 0.197 259.3)
-
Step 600
600
#0869EE
oklch(55.6% 0.216 259.5)
-
Step 700
700
#0058CC
oklch(49.2% 0.194 259.3)
-
Step 800
800 (this color)
#0F50B0
oklch(45.4% 0.166 259.4)
-
Step 900
900
#0F3D84
oklch(37.6% 0.129 259.5)
-
Step 950
950
#0B254D
oklch(27% 0.081 259)
#0F50B0 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) | #005CB3 | 0.031 |
| Deuteranopia (no green cones) | #004EAE | 0.009 |
| Tritanopia (no blue cones) | #006878 | 0.126 |
| Achromatopsia (no color) | #545454 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F50B0
#0F50B0
oklch(45.4% 0.166 259.4)
- #724F00
#724F00
oklch(45.4% 0.094 79.2)
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 #0F50B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.049
- Cobalt #1E488F ΔE 0.056
- Sapphire #2138AB ΔE 0.057
- Dusk Blue #26538D ΔE 0.060
- Blueberry #464196 ΔE 0.070
- Denim Blue #3B5B92 ΔE 0.071
- Light Navy #155084 ΔE 0.072
- Majorelle Blue #3F37C9 ΔE 0.073
Use #0F50B0 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.