#105DC8
Closest named color: Mid Blue (#276AB3). oklch(50.1% 0.181 258.9), rgb(16, 93, 200).
Aa
White text reads best on this color (6.13:1).
About this color
#105DC8 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.181 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.053 away. White text reads best on it, at 6.13:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.42:1 |
| White text | 6.13:1 |
Values
| HEX | #105DC8 |
| RGB | rgb(16, 93, 200) |
| HSL | hsl(215, 85%, 42%) |
| OKLCH | oklch(50.1% 0.181 258.9) |
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 #105DC8 | 6.13:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #105DC8 | 3.42:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #105DC8 text on white | 6.13:1 | AA | Lc 79.9 | Fine for body text |
| #105DC8 text on black | 3.42:1 | AA large text | Lc -21.9 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC2FA
oklch(80.8% 0.089 259.1)
-
Step 400
400
#69A1F7
oklch(70.8% 0.14 258.7)
-
Step 500
500
#3F86F3
oklch(63.1% 0.178 258.9)
-
Step 600
600
#1A6DE2
oklch(55.7% 0.194 258.7)
-
Step 700
700 (this color)
#105DC8
oklch(50.1% 0.181 258.9)
-
Step 800
800
#0F4A9F
oklch(42.7% 0.15 258.9)
-
Step 900
900
#153F7E
oklch(37.7% 0.117 258.8)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#105DC8 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) | #006ACC | 0.033 |
| Deuteranopia (no green cones) | #005AC6 | 0.010 |
| Tritanopia (no blue cones) | #007889 | 0.138 |
| Achromatopsia (no color) | #626262 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105DC8
#105DC8
oklch(50.1% 0.181 258.9)
- #835B00
#835B00
oklch(50.1% 0.104 78.9)
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 #105DC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.053
- Azul #1D5DEC ΔE 0.056
- Warm Blue #4B57DB ΔE 0.057
- Blue Blue #2242C7 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.064
- Cerulean Blue #056EEE ΔE 0.071
- Neon Blue #4361EE ΔE 0.073
- French Blue #436BAD ΔE 0.073
Use #105DC8 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.