#219AC3
Closest named color: Blue NCS (#118AB2). oklch(64.2% 0.116 227), rgb(33, 154, 195).
Aa
Black text reads best on this color (6.47:1).
About this color
#219AC3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.116 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.050 away. Black text reads best on it, at 6.47:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.47:1 |
| White text | 3.24:1 |
Values
| HEX | #219AC3 |
| RGB | rgb(33, 154, 195) |
| HSL | hsl(195, 71%, 45%) |
| OKLCH | oklch(64.2% 0.116 227) |
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 #219AC3 | 3.24:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #219AC3 | 6.47:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #219AC3 text on white | 3.24:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #219AC3 text on black | 6.47:1 | AA | Lc -42.5 | 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
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C4DEE9
oklch(88.5% 0.032 225.1)
-
Step 300
300
#9AC9DD
oklch(80.9% 0.057 225.9)
-
Step 400
400
#5DACCC
oklch(70.6% 0.091 226.6)
-
Step 500
500 (this color)
#219AC3
oklch(64.2% 0.116 227)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#052B38
oklch(27% 0.047 225.8)
#219AC3 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) | #8497C5 | 0.085 |
| Deuteranopia (no green cones) | #6F88C2 | 0.074 |
| Tritanopia (no blue cones) | #00A6A8 | 0.062 |
| Achromatopsia (no color) | #8F8F8F | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #219AC3
#219AC3
oklch(64.2% 0.116 227)
- #C6754C
#C6754C
oklch(64.3% 0.116 46.8)
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 #219AC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.050
- Faded Blue #658CBB ΔE 0.057
- Water Blue #0E87CC ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
- Dusty Blue #5A86AD ΔE 0.063
- Off Blue #5684AE ΔE 0.066
- Turquoise Blue #06B1C4 ΔE 0.066
- Steel Blue #4682B4 ΔE 0.066
Use #219AC3 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.