#0F4B72
Closest named color: Twilight Blue (#0A437A). oklch(39.7% 0.088 243.2), rgb(15, 75, 114).
Aa
White text reads best on this color (9.25:1).
About this color
#0F4B72 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.088 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.031 away. White text reads best on it, at 9.25:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.26:1 |
| White text | 9.25:1 |
Values
| HEX | #0F4B72 |
| RGB | rgb(15, 75, 114) |
| HSL | hsl(204, 77%, 25%) |
| OKLCH | oklch(39.7% 0.088 243.2) |
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 #0F4B72 | 9.25:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #0F4B72 | 2.26:1 | Fails | Lc 13.0 | Not readable |
| #0F4B72 text on white | 9.25:1 | AAA | Lc 91.0 | Preferred for body text |
| #0F4B72 text on black | 2.26:1 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C5DDF0
oklch(88.6% 0.037 241.8)
-
Step 300
300
#9CC6E8
oklch(80.8% 0.066 243.1)
-
Step 400
400
#63A8DD
oklch(70.7% 0.105 243.2)
-
Step 500
500
#2D91D4
oklch(63.1% 0.135 243.1)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900 (this color)
#0F4B72
oklch(39.7% 0.088 243.2)
-
Step 950
950
#09293F
oklch(27% 0.055 243)
#0F4B72 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) | #394C74 | 0.040 |
| Deuteranopia (no green cones) | #2B4371 | 0.030 |
| Tritanopia (no blue cones) | #005559 | 0.061 |
| Achromatopsia (no color) | #474747 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4B72
#0F4B72
oklch(39.7% 0.088 243.2)
- #673B04
#673B04
oklch(39.8% 0.088 63.8)
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 #0F4B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.031
- Light Navy #155084 ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.041
- Charcoal #264653 ΔE 0.052
- Cobalt #1E488F ΔE 0.053
- Dusk Blue #26538D ΔE 0.053
- Deep Teal #00555A ΔE 0.060
Use #0F4B72 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.