#117CE0
Closest named color: Cerulean Blue (#056EEE). oklch(58.6% 0.175 253.2), rgb(17, 124, 224).
Aa
Black text reads best on this color (4.98:1).
About this color
#117CE0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.175 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.044 away. Black text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #117CE0 |
| RGB | rgb(17, 124, 224) |
| HSL | hsl(209, 86%, 47%) |
| OKLCH | oklch(58.6% 0.175 253.2) |
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 #117CE0 | 4.21:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #117CE0 | 4.98:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #117CE0 text on white | 4.21:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #117CE0 text on black | 4.98:1 | AA | Lc -33.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C5DBF6
oklch(88.4% 0.044 253.6)
-
Step 300
300
#9DC4F3
oklch(80.9% 0.079 253.4)
-
Step 400
400
#65A4ED
oklch(70.7% 0.126 253.2)
-
Step 500
500
#358BE8
oklch(63.1% 0.162 253.3)
-
Step 600
600 (this color)
#117CE0
oklch(58.6% 0.175 253.2)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004F95
oklch(42.8% 0.133 253.1)
-
Step 900
900
#0E4277
oklch(37.7% 0.105 253.1)
-
Step 950
950
#0B2746
oklch(27% 0.067 253.4)
#117CE0 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) | #4585E4 | 0.042 |
| Deuteranopia (no green cones) | #1173DE | 0.024 |
| Tritanopia (no blue cones) | #0094A3 | 0.129 |
| Achromatopsia (no color) | #7B7B7B | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #117CE0
#117CE0
oklch(58.6% 0.175 253.2)
- #A86E00
#A86E00
oklch(58.5% 0.125 72.9)
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 #117CE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.044
- Clear Blue #247AFD ΔE 0.046
- Water Blue #0E87CC ΔE 0.047
- Royal Blue #4169E1 ΔE 0.051
- Windows Blue #3778BF ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.060
- Dodger Blue #1E90FF ΔE 0.067
- Neon Blue #4361EE ΔE 0.072
Use #117CE0 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.