#0F4161
Closest named color: Dark Grey Blue (#29465B). oklch(36% 0.075 242), rgb(15, 65, 97).
Aa
White text reads best on this color (10.77:1).
About this color
#0F4161 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.075 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 10.77:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #0F4161 |
| RGB | rgb(15, 65, 97) |
| HSL | hsl(203, 73%, 22%) |
| OKLCH | oklch(36% 0.075 242) |
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 #0F4161 | 10.77:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #0F4161 | 1.94:1 | Fails | Lc 9.3 | Not readable |
| #0F4161 text on white | 10.77:1 | AAA | Lc 94.6 | Preferred for body text |
| #0F4161 text on black | 1.94:1 | Fails | Lc -8.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A1C6E3
oklch(80.9% 0.057 242)
-
Step 400
400
#6CA8D4
oklch(70.8% 0.09 241.4)
-
Step 500
500
#4091C9
oklch(63.1% 0.115 242)
-
Step 600
600
#147AB6
oklch(55.6% 0.126 242.2)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#0A547F
oklch(42.7% 0.097 242)
-
Step 900
900 (this color)
#0F4161
oklch(36% 0.075 242)
-
Step 950
950
#0E293C
oklch(27% 0.048 242.2)
#0F4161 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) | #324262 | 0.036 |
| Deuteranopia (no green cones) | #273A60 | 0.028 |
| Tritanopia (no blue cones) | #00494C | 0.052 |
| Achromatopsia (no color) | #3E3E3E | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F4161
#0F4161
oklch(36% 0.075 242)
- #59330A
#59330A
oklch(36.1% 0.076 62.1)
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 #0F4161, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.036
- Marine Blue #01386A ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.038
- Charcoal #264653 ΔE 0.039
- Midnight Green #073B4C ΔE 0.040
- Twilight Blue #0A437A ΔE 0.043
- Dark Teal #014D4E ΔE 0.059
Use #0F4161 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.