#199EC3
Closest named color: Turquoise Blue (#06B1C4). oklch(65% 0.117 223.2), rgb(25, 158, 195).
Aa
Black text reads best on this color (6.72:1).
About this color
#199EC3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.117 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.055 away. Black text reads best on it, at 6.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.72:1 |
| White text | 3.12:1 |
Values
| HEX | #199EC3 |
| RGB | rgb(25, 158, 195) |
| HSL | hsl(193, 77%, 43%) |
| OKLCH | oklch(65% 0.117 223.2) |
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 #199EC3 | 3.12:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #199EC3 | 6.72:1 | AA | Lc 46.3 | Large or bold text, headings |
| #199EC3 text on white | 3.12:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #199EC3 text on black | 6.72:1 | AA | Lc -44.0 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF2
oklch(93.7% 0.016 221.1)
-
Step 200
200
#C4DEE9
oklch(88.5% 0.032 225.1)
-
Step 300
300
#99C9DC
oklch(80.8% 0.057 224.2)
-
Step 400
400
#5AADCA
oklch(70.7% 0.091 223.3)
-
Step 500
500 (this color)
#199EC3
oklch(65% 0.117 223.2)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#032B38
oklch(27% 0.048 224.9)
#199EC3 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) | #899AC5 | 0.092 |
| Deuteranopia (no green cones) | #748BC3 | 0.081 |
| Tritanopia (no blue cones) | #00A9AA | 0.057 |
| Achromatopsia (no color) | #929292 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #199EC3
#199EC3
oklch(65% 0.117 223.2)
- #CA7653
#CA7653
oklch(65% 0.117 43)
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 #199EC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.055
- Blue NCS #118AB2 ΔE 0.059
- Cadet Blue #5F9EA0 ΔE 0.064
- Faded Blue #658CBB ΔE 0.065
- Teal Green #0A9396 ΔE 0.070
- Sea #3C9992 ΔE 0.072
- Water Blue #0E87CC ΔE 0.072
- Dusty Blue #5A86AD ΔE 0.072
Use #199EC3 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.