#105ECC
Closest named color: Azul (#1D5DEC). oklch(50.7% 0.185 259.1), rgb(16, 94, 204).
Aa
White text reads best on this color (6.00:1).
About this color
#105ECC is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.185 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.050 away. White text reads best on it, at 6.00:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.49:1 |
| White text | 6.00:1 |
Values
| HEX | #105ECC |
| RGB | rgb(16, 94, 204) |
| HSL | hsl(215, 85%, 43%) |
| OKLCH | oklch(50.7% 0.185 259.1) |
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 #105ECC | 6.00:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #105ECC | 3.49:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #105ECC text on white | 6.00:1 | AA | Lc 79.3 | Fine for body text |
| #105ECC text on black | 3.49:1 | AA large text | Lc -22.5 | 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
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300
#9EC2FB
oklch(80.9% 0.09 259.4)
-
Step 400
400
#68A0F9
oklch(70.6% 0.144 259.3)
-
Step 500
500
#3D86F6
oklch(63.2% 0.183 258.9)
-
Step 600
600
#186CE5
oklch(55.7% 0.199 259.1)
-
Step 700
700 (this color)
#105ECC
oklch(50.7% 0.185 259.1)
-
Step 800
800
#0D4AA1
oklch(42.8% 0.153 259)
-
Step 900
900
#143F7F
oklch(37.7% 0.118 258.7)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#105ECC 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) | #006CD0 | 0.036 |
| Deuteranopia (no green cones) | #005BCA | 0.010 |
| Tritanopia (no blue cones) | #007A8C | 0.141 |
| Achromatopsia (no color) | #636363 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105ECC
#105ECC
oklch(50.7% 0.185 259.1)
- #855D00
#855D00
oklch(50.8% 0.105 79.4)
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 #105ECC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.050
- Warm Blue #4B57DB ΔE 0.054
- Mid Blue #276AB3 ΔE 0.056
- Royal Blue #4169E1 ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.064
- Blue Blue #2242C7 ΔE 0.064
- Neon Blue #4361EE ΔE 0.067
- Bright Blue #0165FC ΔE 0.075
Use #105ECC 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.