#0F56A3
Closest named color: Dusk Blue (#26538D). oklch(45.7% 0.141 255), rgb(15, 86, 163).
Aa
White text reads best on this color (7.29:1).
About this color
#0F56A3 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.141 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.037 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.88:1 |
| White text | 7.29:1 |
Values
| HEX | #0F56A3 |
| RGB | rgb(15, 86, 163) |
| HSL | hsl(211, 83%, 35%) |
| OKLCH | oklch(45.7% 0.141 255) |
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 #0F56A3 | 7.29:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #0F56A3 | 2.88:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #0F56A3 text on white | 7.29:1 | AAA | Lc 84.8 | Fine for body text |
| #0F56A3 text on black | 2.88:1 | Fails | Lc -17.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#65A3F1
oklch(70.7% 0.132 254.9)
-
Step 500
500
#3789EC
oklch(63% 0.169 255.2)
-
Step 600
600
#0171DA
oklch(55.6% 0.182 254.9)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800 (this color)
#0F56A3
oklch(45.7% 0.141 255)
-
Step 900
900
#0F417A
oklch(37.7% 0.11 255)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#0F56A3 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) | #2A5DA6 | 0.029 |
| Deuteranopia (no green cones) | #0051A1 | 0.016 |
| Tritanopia (no blue cones) | #006974 | 0.107 |
| Achromatopsia (no color) | #565656 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F56A3
#0F56A3
oklch(45.7% 0.141 255)
- #764E00
#764E00
oklch(45.7% 0.096 75.1)
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 #0F56A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.037
- Cobalt #1E488F ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.051
- Light Navy #155084 ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.055
- Peacock Blue #016795 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.063
Use #0F56A3 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.