#0F41B3
Closest named color: Sapphire (#2138AB). oklch(42.6% 0.188 263), rgb(15, 65, 179).
Aa
White text reads best on this color (8.65:1).
About this color
#0F41B3 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.188 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.025 away. White text reads best on it, at 8.65:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #0F41B3 |
| RGB | rgb(15, 65, 179) |
| HSL | hsl(222, 85%, 38%) |
| OKLCH | oklch(42.6% 0.188 263) |
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 #0F41B3 | 8.65:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #0F41B3 | 2.42:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #0F41B3 text on white | 8.65:1 | AAA | Lc 88.8 | Fine for body text |
| #0F41B3 text on black | 2.42:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4681FF
oklch(63.1% 0.198 263.1)
-
Step 600
600
#1B60FF
oklch(55.6% 0.245 263.1)
-
Step 700
700
#0F4EDE
oklch(49.1% 0.227 263.1)
-
Step 800
800 (this color)
#0F41B3
oklch(42.6% 0.188 263)
-
Step 900
900
#14398E
oklch(37.7% 0.147 263.3)
-
Step 950
950
#0C2353
oklch(27.1% 0.092 262.6)
#0F41B3 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) | #0053B7 | 0.044 |
| Deuteranopia (no green cones) | #0044B1 | 0.008 |
| Tritanopia (no blue cones) | #005F74 | 0.142 |
| Achromatopsia (no color) | #4C4C4C | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F41B3
#0F41B3
oklch(42.6% 0.188 263)
- #664900
#664900
oklch(42.6% 0.088 82.4)
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 #0F41B3, closest first.
No curated palette has a color within ΔE 0.04 of #0F41B3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.025
- Blue Blue #2242C7 ΔE 0.035
- Majorelle Blue #3F37C9 ΔE 0.058
- Cobalt #1E488F ΔE 0.063
- Blueberry #464196 ΔE 0.074
- Indigo Blue #3A18B1 ΔE 0.075
- True Blue #010FCC ΔE 0.081
- Blue With A Hint Of Purple #533CC6 ΔE 0.082
Use #0F41B3 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.