#0F3782
Closest named color: Twilight Blue (#0A437A). oklch(36% 0.134 261.5), rgb(15, 55, 130).
Aa
White text reads best on this color (11.11:1).
About this color
#0F3782 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.134 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 11.11:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #0F3782 |
| RGB | rgb(15, 55, 130) |
| HSL | hsl(219, 79%, 28%) |
| OKLCH | oklch(36% 0.134 261.5) |
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 #0F3782 | 11.11:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #0F3782 | 1.88:1 | Fails | Lc 8.8 | Not readable |
| #0F3782 text on white | 11.11:1 | AAA | Lc 95.1 | Preferred for body text |
| #0F3782 text on black | 1.88:1 | Fails | Lc -7.5 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699EFF
oklch(70.6% 0.153 261.6)
-
Step 500
500
#4082FF
oklch(63.1% 0.198 261.6)
-
Step 600
600
#1966F3
oklch(55.6% 0.224 261.5)
-
Step 700
700
#0B53D4
oklch(49.1% 0.209 261.6)
-
Step 800
800
#0E45AB
oklch(42.6% 0.173 261.6)
-
Step 900
900 (this color)
#0F3782
oklch(36% 0.134 261.5)
-
Step 950
950
#0D244F
oklch(27% 0.084 261.5)
#0F3782 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) | #004185 | 0.027 |
| Deuteranopia (no green cones) | #003781 | 0.008 |
| Tritanopia (no blue cones) | #004A57 | 0.103 |
| Achromatopsia (no color) | #3B3B3B | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F3782
#0F3782
oklch(36% 0.134 261.5)
- #513800
#513800
oklch(36% 0.074 80.6)
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 #0F3782, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Marine Blue #01386A ΔE 0.043
- Cobalt #1E488F ΔE 0.054
- Marine #042E60 ΔE 0.065
- Royal #0C1793 ΔE 0.071
- Sapphire #2138AB ΔE 0.071
- Light Navy #155084 ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.074
Use #0F3782 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.