#0F4083
Closest named color: Twilight Blue (#0A437A). oklch(38.2% 0.124 257.9), rgb(15, 64, 131).
Aa
White text reads best on this color (10.08:1).
About this color
#0F4083 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.124 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.019 away. White text reads best on it, at 10.08:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.08:1 |
Values
| HEX | #0F4083 |
| RGB | rgb(15, 64, 131) |
| HSL | hsl(215, 79%, 29%) |
| OKLCH | oklch(38.2% 0.124 257.9) |
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 #0F4083 | 10.08:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #0F4083 | 2.08:1 | Fails | Lc 11.0 | Not readable |
| #0F4083 text on white | 10.08:1 | AAA | Lc 92.9 | Preferred for body text |
| #0F4083 text on black | 2.08:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFC
oklch(88.5% 0.052 257.4)
-
Step 300
300
#9BC3FD
oklch(81% 0.093 257.6)
-
Step 400
400
#63A1FC
oklch(70.8% 0.149 257.9)
-
Step 500
500
#3486F9
oklch(63.1% 0.189 257.8)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC4
oklch(49% 0.181 258)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900 (this color)
#0F4083
oklch(38.2% 0.124 257.9)
-
Step 950
950
#0A254C
oklch(26.9% 0.079 258.2)
#0F4083 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) | #164785 | 0.022 |
| Deuteranopia (no green cones) | #003D82 | 0.012 |
| Tritanopia (no blue cones) | #00505B | 0.093 |
| Achromatopsia (no color) | #424242 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4083
#0F4083
oklch(38.2% 0.124 257.9)
- #5A3C00
#5A3C00
oklch(38.1% 0.08 77.1)
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 #0F4083, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.019
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.048
- Marine Blue #01386A ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.059
- Dusk Blue #26538D ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.069
- Sapphire #2138AB ΔE 0.070
Use #0F4083 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.