#105AD0
Closest named color: Azul (#1D5DEC). oklch(50.2% 0.195 260.4), rgb(16, 90, 208).
Aa
White text reads best on this color (6.18:1).
About this color
#105AD0 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.195 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.045 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #105AD0 |
| RGB | rgb(16, 90, 208) |
| HSL | hsl(217, 86%, 44%) |
| OKLCH | oklch(50.2% 0.195 260.4) |
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 #105AD0 | 6.18:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #105AD0 | 3.39:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #105AD0 text on white | 6.18:1 | AA | Lc 80.0 | Fine for body text |
| #105AD0 text on black | 3.39:1 | AA large text | Lc -21.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9DC2FE
oklch(80.9% 0.094 259.9)
-
Step 400
400
#689FFE
oklch(70.7% 0.151 260.7)
-
Step 500
500
#3D84FC
oklch(63.2% 0.193 260.3)
-
Step 600
600
#1A69EB
oklch(55.6% 0.21 260.5)
-
Step 700
700 (this color)
#105AD0
oklch(50.2% 0.195 260.4)
-
Step 800
800
#0E48A5
oklch(42.7% 0.161 260.2)
-
Step 900
900
#143D83
oklch(37.6% 0.127 260.5)
-
Step 950
950
#0D254D
oklch(27.1% 0.08 260.1)
#105AD0 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) | #006AD4 | 0.040 |
| Deuteranopia (no green cones) | #0059CE | 0.007 |
| Tritanopia (no blue cones) | #00788C | 0.148 |
| Achromatopsia (no color) | #616161 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105AD0
#105AD0
oklch(50.2% 0.195 260.4)
- #825C00
#825C00
oklch(50.2% 0.104 80.5)
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 #105AD0, closest first.
No curated palette has a color within ΔE 0.04 of #105AD0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.045
- Warm Blue #4B57DB ΔE 0.052
- Blue Blue #2242C7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.062
- Neon Blue #4361EE ΔE 0.065
- Cerulean Blue #056EEE ΔE 0.066
- Mid Blue #276AB3 ΔE 0.067
- Bright Blue #0165FC ΔE 0.072
Use #105AD0 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.