#109DCA
Closest named color: Blue NCS (#118AB2). oklch(65% 0.124 227.7), rgb(16, 157, 202).
Aa
Black text reads best on this color (6.69:1).
About this color
#109DCA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.124 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.059 away. Black text reads best on it, at 6.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.69:1 |
| White text | 3.13:1 |
Values
| HEX | #109DCA |
| RGB | rgb(16, 157, 202) |
| HSL | hsl(195, 85%, 43%) |
| OKLCH | oklch(65% 0.124 227.7) |
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 #109DCA | 3.13:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #109DCA | 6.69:1 | AA | Lc 46.2 | Large or bold text, headings |
| #109DCA text on white | 3.13:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #109DCA text on black | 6.69:1 | AA | Lc -43.9 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEECF3
oklch(93.5% 0.018 229)
-
Step 200
200
#C3DEEB
oklch(88.5% 0.034 228.4)
-
Step 300
300
#98C9E0
oklch(80.9% 0.061 228.4)
-
Step 400
400
#58ADD0
oklch(70.8% 0.097 227.4)
-
Step 500
500 (this color)
#109DCA
oklch(65% 0.124 227.7)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950
#022B3A
oklch(27% 0.051 228.1)
#109DCA 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) | #859ACC | 0.089 |
| Deuteranopia (no green cones) | #6F8BC9 | 0.076 |
| Tritanopia (no blue cones) | #00AAAC | 0.068 |
| Achromatopsia (no color) | #919191 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #109DCA
#109DCA
oklch(65% 0.124 227.7)
- #CC7648
#CC7648
oklch(65.1% 0.124 47.7)
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 #109DCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.059
- Turquoise Blue #06B1C4 ΔE 0.061
- Faded Blue #658CBB ΔE 0.064
- Water Blue #0E87CC ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.067
- Cool Blue #4984B8 ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.071
- Dusty Blue #5A86AD ΔE 0.073
Use #109DCA 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.