#3389EB
Closest named color: Dark Sky Blue (#448EE4). oklch(62.8% 0.168 254.4), rgb(51, 137, 235).
Aa
Black text reads best on this color (5.91:1).
About this color
#3389EB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.168 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.023 away. Black text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.91:1 |
| White text | 3.54:1 |
Values
| HEX | #3389EB |
| RGB | rgb(51, 137, 235) |
| HSL | hsl(212, 82%, 56%) |
| OKLCH | oklch(62.8% 0.168 254.4) |
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 #3389EB | 3.54:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #3389EB | 5.91:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #3389EB text on white | 3.54:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #3389EB text on black | 5.91:1 | AA | Lc -39.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F5
oklch(80.9% 0.082 253.8)
-
Step 400
400
#64A3F1
oklch(70.7% 0.132 254.6)
-
Step 500
500 (this color)
#3389EB
oklch(62.8% 0.168 254.4)
-
Step 600
600
#0071D8
oklch(55.5% 0.179 254.5)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#004E98
oklch(42.8% 0.138 254.3)
-
Step 900
900
#0D417A
oklch(37.7% 0.11 254.6)
-
Step 950
950
#0A2747
oklch(27.1% 0.069 253.6)
#3389EB 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) | #5891EF | 0.040 |
| Deuteranopia (no green cones) | #3780E9 | 0.023 |
| Tritanopia (no blue cones) | #00A0AE | 0.127 |
| Achromatopsia (no color) | #888888 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3389EB
#3389EB
oklch(62.8% 0.168 254.4)
- #B77A00
#B77A00
oklch(62.7% 0.133 74.2)
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 #3389EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.023
- Dodger Blue #1E90FF ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.038
- Soft Blue #6488EA ΔE 0.042
- Water Blue #0E87CC ΔE 0.051
- Clear Blue #247AFD ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.057
- Cornflower #6A79F7 ΔE 0.065
Use #3389EB 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.