#219DE3
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.5% 0.145 240.6), rgb(33, 157, 227).
Aa
Black text reads best on this color (6.99:1).
About this color
#219DE3 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.145 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.037 away. Black text reads best on it, at 6.99:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.99:1 |
| White text | 3.00:1 |
Values
| HEX | #219DE3 |
| RGB | rgb(33, 157, 227) |
| HSL | hsl(202, 78%, 51%) |
| OKLCH | oklch(66.5% 0.145 240.6) |
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 #219DE3 | 3.00:1 | AA large text | Lc -61.5 | Content text, not long reading |
| Black text on #219DE3 | 6.99:1 | AA | Lc 47.9 | Large or bold text, headings |
| #219DE3 text on white | 3.00:1 | AA large text | Lc 56.2 | Large or bold text, headings |
| #219DE3 text on black | 6.99:1 | AA | Lc -45.6 | Large or bold text, headings |
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
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C3DDF1
oklch(88.5% 0.039 241.1)
-
Step 300
300
#97C7EA
oklch(80.8% 0.071 240.4)
-
Step 400
400
#58A9E0
oklch(70.6% 0.113 240.6)
-
Step 500
500 (this color)
#219DE3
oklch(66.5% 0.145 240.6)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950
#022941
oklch(26.9% 0.061 241.6)
#219DE3 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) | #7C9EE6 | 0.073 |
| Deuteranopia (no green cones) | #618DE2 | 0.056 |
| Tritanopia (no blue cones) | #00AFB6 | 0.097 |
| Achromatopsia (no color) | #959595 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #219DE3
#219DE3
oklch(66.5% 0.145 240.6)
- #D27B1F
#D27B1F
oklch(66.4% 0.145 60.5)
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 #219DE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.060
- Water Blue #0E87CC ΔE 0.067
- Soft Blue #6488EA ΔE 0.071
- Faded Blue #658CBB ΔE 0.075
- Cool Blue #4984B8 ΔE 0.083
Use #219DE3 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.