#105FBD
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.164 256.7), rgb(16, 95, 189).
Aa
White text reads best on this color (6.18:1).
About this color
#105FBD is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.164 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #105FBD |
| RGB | rgb(16, 95, 189) |
| HSL | hsl(213, 84%, 40%) |
| OKLCH | oklch(49.7% 0.164 256.7) |
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 #105FBD | 6.18:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #105FBD | 3.39:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #105FBD text on white | 6.18:1 | AA | Lc 80.2 | Fine for body text |
| #105FBD text on black | 3.39:1 | AA large text | Lc -21.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A0C3F4
oklch(80.9% 0.079 256.8)
-
Step 400
400
#6BA2EF
oklch(70.7% 0.128 257)
-
Step 500
500
#4189E9
oklch(63.2% 0.162 256.6)
-
Step 600
600
#1C70D8
oklch(55.6% 0.177 256.8)
-
Step 700
700 (this color)
#105FBD
oklch(49.7% 0.164 256.7)
-
Step 800
800
#104D97
oklch(42.8% 0.135 256.5)
-
Step 900
900
#164178
oklch(37.8% 0.105 256.3)
-
Step 950
950
#0E2646
oklch(26.9% 0.067 256.5)
#105FBD 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) | #2369C0 | 0.031 |
| Deuteranopia (no green cones) | #005ABB | 0.015 |
| Tritanopia (no blue cones) | #007685 | 0.123 |
| Achromatopsia (no color) | #616161 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105FBD
#105FBD
oklch(49.7% 0.164 256.7)
- #835900
#835900
oklch(49.7% 0.104 77)
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 #105FBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- French Blue #436BAD ΔE 0.061
- Warm Blue #4B57DB ΔE 0.070
- Blue Blue #2242C7 ΔE 0.070
- Denim Blue #3B5B92 ΔE 0.072
- Peacock Blue #016795 ΔE 0.072
- Royal Blue #4169E1 ΔE 0.073
- Azul #1D5DEC ΔE 0.074
Use #105FBD 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.