#0F4071
Closest named color: Twilight Blue (#0A437A). oklch(36.8% 0.098 252.5), rgb(15, 64, 113).
Aa
White text reads best on this color (10.54:1).
About this color
#0F4071 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.098 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.016 away. White text reads best on it, at 10.54:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.99:1 |
| White text | 10.54:1 |
Values
| HEX | #0F4071 |
| RGB | rgb(15, 64, 113) |
| HSL | hsl(210, 77%, 25%) |
| OKLCH | oklch(36.8% 0.098 252.5) |
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 #0F4071 | 10.54:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #0F4071 | 1.99:1 | Fails | Lc 9.9 | Not readable |
| #0F4071 text on white | 10.54:1 | AAA | Lc 94.1 | Preferred for body text |
| #0F4071 text on black | 1.99:1 | Fails | Lc -8.5 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DBF4
oklch(88.4% 0.041 252.8)
-
Step 300
300
#9FC4F0
oklch(80.9% 0.074 253.1)
-
Step 400
400
#68A4E8
oklch(70.6% 0.118 252.6)
-
Step 500
500
#3B8CE1
oklch(63.1% 0.15 252.3)
-
Step 600
600
#0D74CF
oklch(55.6% 0.163 252.4)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800
#054F91
oklch(42.6% 0.126 252.6)
-
Step 900
900 (this color)
#0F4071
oklch(36.8% 0.098 252.5)
-
Step 950
950
#0D2744
oklch(27% 0.063 253.3)
#0F4071 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) | #284473 | 0.027 |
| Deuteranopia (no green cones) | #163B70 | 0.015 |
| Tritanopia (no blue cones) | #004C53 | 0.073 |
| Achromatopsia (no color) | #3F3F3F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4071
#0F4071
oklch(36.8% 0.098 252.5)
- #583700
#583700
oklch(36.7% 0.079 72.2)
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 #0F4071, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.016
- Marine Blue #01386A ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
- Light Navy #155084 ΔE 0.055
- Cobalt #1E488F ΔE 0.056
- Marine #042E60 ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.062
Use #0F4071 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.