#3F94EA
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.5% 0.152 251.5), rgb(63, 148, 234).
Aa
Black text reads best on this color (6.63:1).
About this color
#3F94EA is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.152 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.011 away. Black text reads best on it, at 6.63:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.63:1 |
| White text | 3.16:1 |
Values
| HEX | #3F94EA |
| RGB | rgb(63, 148, 234) |
| HSL | hsl(210, 80%, 58%) |
| OKLCH | oklch(65.5% 0.152 251.5) |
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 #3F94EA | 3.16:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #3F94EA | 6.63:1 | AA | Lc 45.6 | Large or bold text, headings |
| #3F94EA text on white | 3.16:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #3F94EA text on black | 6.63:1 | AA | Lc -43.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9EC4F0
oklch(80.8% 0.075 252.4)
-
Step 400
400
#66A5E8
oklch(70.7% 0.118 251.2)
-
Step 500
500 (this color)
#3F94EA
oklch(65.5% 0.152 251.5)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#0F4374
oklch(37.8% 0.099 251.4)
-
Step 950
950
#0B2744
oklch(26.9% 0.064 252.1)
#3F94EA 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) | #6C99EE | 0.045 |
| Deuteranopia (no green cones) | #5389E8 | 0.030 |
| Tritanopia (no blue cones) | #00A8B4 | 0.114 |
| Achromatopsia (no color) | #919191 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F94EA
#3F94EA
oklch(65.5% 0.152 251.5)
- #C58000
#C58000
oklch(65.6% 0.141 71.7)
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 #3F94EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.011
- Dark Sky Blue #448EE4 ΔE 0.017
- Cornflower Blue #6495ED ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.038
- Soft Blue #6488EA ΔE 0.042
- Water Blue #0E87CC ΔE 0.062
- Faded Blue #658CBB ΔE 0.073
- Cool Blue #4984B8 ΔE 0.079
Use #3F94EA 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.