#108ECA
Closest named color: Water Blue (#0E87CC). oklch(61.4% 0.133 237.9), rgb(16, 142, 202).
Aa
Black text reads best on this color (5.74:1).
About this color
#108ECA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.133 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.021 away. Black text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.74:1 |
| White text | 3.65:1 |
Values
| HEX | #108ECA |
| RGB | rgb(16, 142, 202) |
| HSL | hsl(199, 85%, 43%) |
| OKLCH | oklch(61.4% 0.133 237.9) |
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 #108ECA | 3.65:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #108ECA | 5.74:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #108ECA text on white | 3.65:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #108ECA text on black | 5.74:1 | AA | Lc -38.1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#9AC7E6
oklch(80.8% 0.065 238.7)
-
Step 400
400
#5DAADA
oklch(70.8% 0.104 238)
-
Step 500
500 (this color)
#108ECA
oklch(61.4% 0.133 237.9)
-
Step 600
600
#007CB2
oklch(55.6% 0.123 237.7)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#052A3E
oklch(27.1% 0.055 237.7)
#108ECA 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) | #718ECD | 0.072 |
| Deuteranopia (no green cones) | #597FC9 | 0.057 |
| Tritanopia (no blue cones) | #009DA3 | 0.084 |
| Achromatopsia (no color) | #868686 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #108ECA
#108ECA
oklch(61.4% 0.133 237.9)
- #BE6D23
#BE6D23
oklch(61.4% 0.132 57.8)
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 #108ECA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.021
- Blue NCS #118AB2 ΔE 0.037
- Cool Blue #4984B8 ΔE 0.041
- Steel Blue #4682B4 ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.050
- Off Blue #5684AE ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.058
- Faded Blue #658CBB ΔE 0.059
Use #108ECA 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.