#108ADE
Closest named color: Water Blue (#0E87CC). oklch(61.6% 0.158 247.2), rgb(16, 138, 222).
Aa
Black text reads best on this color (5.71:1).
About this color
#108ADE is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.158 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.028 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #108ADE |
| RGB | rgb(16, 138, 222) |
| HSL | hsl(204, 87%, 47%) |
| OKLCH | oklch(61.6% 0.158 247.2) |
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 #108ADE | 3.67:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #108ADE | 5.71:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #108ADE text on white | 3.67:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #108ADE text on black | 5.71:1 | AA | Lc -38.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C3DCF5
oklch(88.4% 0.044 248.3)
-
Step 300
300
#98C6F1
oklch(80.9% 0.078 247.1)
-
Step 400
400
#5BA7EA
oklch(70.8% 0.124 247.2)
-
Step 500
500 (this color)
#108ADE
oklch(61.6% 0.158 247.2)
-
Step 600
600
#0078C4
oklch(55.7% 0.147 247.1)
-
Step 700
700
#0064A5
oklch(49% 0.13 247.2)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#042844
oklch(26.9% 0.065 247)
#108ADE 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) | #618FE1 | 0.058 |
| Deuteranopia (no green cones) | #427EDC | 0.036 |
| Tritanopia (no blue cones) | #009EA9 | 0.112 |
| Achromatopsia (no color) | #858585 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #108ADE
#108ADE
oklch(61.6% 0.158 247.2)
- #BA7200
#BA7200
oklch(61.6% 0.136 67.2)
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 #108ADE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.051
- Cool Blue #4984B8 ΔE 0.061
- Windows Blue #3778BF ΔE 0.061
- Soft Blue #6488EA ΔE 0.061
- Steel Blue #4682B4 ΔE 0.066
Use #108ADE 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.