#117FC0
Closest named color: Windows Blue (#3778BF). oklch(57.3% 0.134 243), rgb(17, 127, 192).
Aa
Black text reads best on this color (4.82:1).
About this color
#117FC0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.134 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.024 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #117FC0 |
| RGB | rgb(17, 127, 192) |
| HSL | hsl(202, 84%, 41%) |
| OKLCH | oklch(57.3% 0.134 243) |
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 #117FC0 | 4.35:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #117FC0 | 4.82:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #117FC0 text on white | 4.35:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #117FC0 text on black | 4.82:1 | AA | Lc -32.0 | 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 600.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E5
oklch(81% 0.06 243.2)
-
Step 400
400
#69A8D8
oklch(70.8% 0.096 242.6)
-
Step 500
500
#3A91CD
oklch(63.1% 0.122 242.5)
-
Step 600
600 (this color)
#117FC0
oklch(57.3% 0.134 243)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#015482
oklch(42.8% 0.102 242.6)
-
Step 900
900
#114568
oklch(37.6% 0.08 243.2)
-
Step 950
950
#0C293D
oklch(27% 0.051 242.2)
#117FC0 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) | #6081C3 | 0.060 |
| Deuteranopia (no green cones) | #4872BF | 0.045 |
| Tritanopia (no blue cones) | #008F96 | 0.091 |
| Achromatopsia (no color) | #797979 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #117FC0
#117FC0
oklch(57.3% 0.134 243)
- #AD6400
#AD6400
oklch(57.3% 0.131 63.1)
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 #117FC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.024
- Water Blue #0E87CC ΔE 0.026
- Nice Blue #107AB0 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.041
- Blue NCS #118AB2 ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.046
- Cerulean #457B9D ΔE 0.058
Use #117FC0 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.