#0F427F
Closest named color: Twilight Blue (#0A437A). oklch(38.3% 0.116 255.9), rgb(15, 66, 127).
Aa
White text reads best on this color (9.97:1).
About this color
#0F427F is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.116 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.010 away. White text reads best on it, at 9.97:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.10:1 |
| White text | 9.97:1 |
Values
| HEX | #0F427F |
| RGB | rgb(15, 66, 127) |
| HSL | hsl(213, 79%, 28%) |
| OKLCH | oklch(38.3% 0.116 255.9) |
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 #0F427F | 9.97:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #0F427F | 2.10:1 | Fails | Lc 11.3 | Not readable |
| #0F427F text on white | 9.97:1 | AAA | Lc 92.7 | Preferred for body text |
| #0F427F text on black | 2.10:1 | Fails | Lc -9.8 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9CC3F8
oklch(80.8% 0.086 256.2)
-
Step 400
400
#63A2F5
oklch(70.6% 0.139 255.9)
-
Step 500
500
#3388F2
oklch(63.1% 0.178 256)
-
Step 600
600
#006FDE
oklch(55.5% 0.189 256)
-
Step 700
700
#005DBC
oklch(49% 0.167 256)
-
Step 800
800
#004C9C
oklch(42.7% 0.146 256)
-
Step 900
900 (this color)
#0F427F
oklch(38.3% 0.116 255.9)
-
Step 950
950
#0A2649
oklch(26.9% 0.073 255.8)
#0F427F 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) | #204881 | 0.024 |
| Deuteranopia (no green cones) | #013E7E | 0.015 |
| Tritanopia (no blue cones) | #00515A | 0.088 |
| Achromatopsia (no color) | #434343 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F427F
#0F427F
oklch(38.3% 0.116 255.9)
- #5B3C00
#5B3C00
oklch(38.2% 0.08 76.2)
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 #0F427F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.010
- Cobalt #1E488F ΔE 0.034
- Light Navy #155084 ΔE 0.042
- Marine Blue #01386A ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.053
- Dusk Blue #26538D ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.070
Use #0F427F 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.