#0F409D
Closest named color: Sapphire (#2138AB). oklch(40.4% 0.16 261.7), rgb(15, 64, 157).
Aa
White text reads best on this color (9.37:1).
About this color
#0F409D is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.160 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.030 away. White text reads best on it, at 9.37:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.24:1 |
| White text | 9.37:1 |
Values
| HEX | #0F409D |
| RGB | rgb(15, 64, 157) |
| HSL | hsl(219, 83%, 34%) |
| OKLCH | oklch(40.4% 0.16 261.7) |
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 #0F409D | 9.37:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #0F409D | 2.24:1 | Fails | Lc 13.0 | Not readable |
| #0F409D text on white | 9.37:1 | AAA | Lc 90.9 | Preferred for body text |
| #0F409D text on black | 2.24:1 | Fails | Lc -11.4 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#9FC1FE
oklch(80.8% 0.094 261.9)
-
Step 400
400
#6B9FFD
oklch(70.8% 0.149 261.4)
-
Step 500
500
#4383FB
oklch(63.1% 0.191 261.6)
-
Step 600
600
#2568EA
oklch(55.5% 0.208 261.8)
-
Step 700
700
#1856CC
oklch(49.2% 0.193 261.7)
-
Step 800
800 (this color)
#0F409D
oklch(40.4% 0.16 261.7)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#0F409D 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) | #004DA0 | 0.034 |
| Deuteranopia (no green cones) | #00409B | 0.007 |
| Tritanopia (no blue cones) | #005868 | 0.122 |
| Achromatopsia (no color) | #464646 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F409D
#0F409D
oklch(40.4% 0.16 261.7)
- #5F4300
#5F4300
oklch(40.3% 0.083 81.5)
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 #0F409D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.030
- Cobalt #1E488F ΔE 0.035
- Twilight Blue #0A437A ΔE 0.060
- Blueberry #464196 ΔE 0.062
- Light Navy #155084 ΔE 0.064
- Dusk Blue #26538D ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.070
- Blue Blue #2242C7 ΔE 0.070
Use #0F409D 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.