#2189EF
Closest named color: Dodger Blue (#1E90FF). oklch(62.7% 0.177 252.9), rgb(33, 137, 239).
Aa
Black text reads best on this color (5.88:1).
About this color
#2189EF is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.177 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.028 away. Black text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #2189EF |
| RGB | rgb(33, 137, 239) |
| HSL | hsl(210, 87%, 53%) |
| OKLCH | oklch(62.7% 0.177 252.9) |
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 #2189EF | 3.56:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #2189EF | 5.88:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #2189EF text on white | 3.56:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #2189EF text on black | 5.88:1 | AA | Lc -39.0 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#99C4F8
oklch(80.8% 0.087 253.5)
-
Step 400
400
#5DA4F4
oklch(70.7% 0.138 252.8)
-
Step 500
500 (this color)
#2189EF
oklch(62.7% 0.177 252.9)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0061B3
oklch(49.2% 0.151 252.8)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417C
oklch(37.6% 0.116 253)
-
Step 950
950
#062749
oklch(27.1% 0.073 252.8)
#2189EF 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) | #5491F3 | 0.044 |
| Deuteranopia (no green cones) | #2B7FED | 0.025 |
| Tritanopia (no blue cones) | #00A2B0 | 0.133 |
| Achromatopsia (no color) | #888888 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2189EF
#2189EF
oklch(62.7% 0.177 252.9)
- #B87900
#B87900
oklch(62.6% 0.133 73)
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 #2189EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.043
- Clear Blue #247AFD ΔE 0.046
- Soft Blue #6488EA ΔE 0.051
- Water Blue #0E87CC ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.064
- Cornflower #6A79F7 ΔE 0.069
Use #2189EF 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.