#219BD7
Closest named color: Dark Sky Blue (#448EE4). oklch(65.4% 0.134 236.8), rgb(33, 155, 215).
Aa
Black text reads best on this color (6.73:1).
About this color
#219BD7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.134 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.047 away. Black text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #219BD7 |
| RGB | rgb(33, 155, 215) |
| HSL | hsl(200, 73%, 49%) |
| OKLCH | oklch(65.4% 0.134 236.8) |
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 #219BD7 | 3.11:1 | AA large text | Lc -63.1 | Content text, not long reading |
| Black text on #219BD7 | 6.73:1 | AA | Lc 46.3 | Large or bold text, headings |
| #219BD7 text on white | 3.11:1 | AA large text | Lc 57.7 | Large or bold text, headings |
| #219BD7 text on black | 6.73:1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEE
oklch(88.4% 0.036 237.6)
-
Step 300
300
#99C8E6
oklch(81% 0.065 236.6)
-
Step 400
400
#5AAAD9
oklch(70.6% 0.104 236.6)
-
Step 500
500 (this color)
#219BD7
oklch(65.4% 0.134 236.8)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#032A3E
oklch(27% 0.056 236.7)
#219BD7 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) | #7E9BDA | 0.076 |
| Deuteranopia (no green cones) | #668BD6 | 0.061 |
| Tritanopia (no blue cones) | #00AAB0 | 0.083 |
| Achromatopsia (no color) | #929292 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #219BD7
#219BD7
oklch(65.4% 0.134 236.8)
- #CD7932
#CD7932
oklch(65.6% 0.134 57.1)
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 #219BD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.049
- Water Blue #0E87CC ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.062
- Faded Blue #658CBB ΔE 0.063
- Blue NCS #118AB2 ΔE 0.068
- Cool Blue #4984B8 ΔE 0.070
- Dodger Blue #1E90FF ΔE 0.073
Use #219BD7 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.