#3398F6
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.8% 0.167 250.7), rgb(51, 152, 246).
Aa
Black text reads best on this color (6.96:1).
About this color
#3398F6 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.167 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.016 away. Black text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #3398F6 |
| RGB | rgb(51, 152, 246) |
| HSL | hsl(209, 92%, 58%) |
| OKLCH | oklch(66.8% 0.167 250.7) |
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 #3398F6 | 3.01:1 | AA large text | Lc -61.8 | Content text, not long reading |
| Black text on #3398F6 | 6.96:1 | AA | Lc 47.6 | Large or bold text, headings |
| #3398F6 text on white | 3.01:1 | AA large text | Lc 56.4 | Large or bold text, headings |
| #3398F6 text on black | 6.96:1 | AA | Lc -45.3 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#99C5F4
oklch(80.9% 0.082 250.5)
-
Step 400
400
#5DA5EF
oklch(70.7% 0.131 250.8)
-
Step 500
500 (this color)
#3398F6
oklch(66.8% 0.167 250.7)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004378
oklch(37.8% 0.108 250.3)
-
Step 950
950
#062746
oklch(26.8% 0.069 250.9)
#3398F6 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) | #6B9EFA | 0.051 |
| Deuteranopia (no green cones) | #4C8CF4 | 0.032 |
| Tritanopia (no blue cones) | #00AEBB | 0.122 |
| Achromatopsia (no color) | #949494 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3398F6
#3398F6
oklch(66.8% 0.167 250.7)
- #CB8300
#CB8300
oklch(66.9% 0.144 71.1)
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 #3398F6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.016
- Dodger Blue #1E90FF ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.039
- Soft Blue #6488EA ΔE 0.052
- Water Blue #0E87CC ΔE 0.077
- Clear Blue #247AFD ΔE 0.082
- Cornflower #6A79F7 ΔE 0.085
Use #3398F6 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.