#3F95ED
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.9% 0.155 251.8), rgb(63, 149, 237).
Aa
Black text reads best on this color (6.73:1).
About this color
#3F95ED is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.155 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.007 away. Black text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #3F95ED |
| RGB | rgb(63, 149, 237) |
| HSL | hsl(210, 83%, 59%) |
| OKLCH | oklch(65.9% 0.155 251.8) |
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 #3F95ED | 3.11:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #3F95ED | 6.73:1 | AA | Lc 46.2 | Large or bold text, headings |
| #3F95ED text on white | 3.11:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #3F95ED text on black | 6.73:1 | AA | Lc -43.9 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC4F1
oklch(80.8% 0.076 252.3)
-
Step 400
400
#65A5EA
oklch(70.8% 0.121 251.5)
-
Step 500
500 (this color)
#3F95ED
oklch(65.9% 0.155 251.8)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#0E4375
oklch(37.8% 0.101 251.6)
-
Step 950
950
#0B2744
oklch(26.9% 0.064 252.1)
#3F95ED 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) | #6C9BF1 | 0.046 |
| Deuteranopia (no green cones) | #528BEB | 0.028 |
| Tritanopia (no blue cones) | #00AAB6 | 0.117 |
| Achromatopsia (no color) | #929292 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F95ED
#3F95ED
oklch(65.9% 0.155 251.8)
- #C68100
#C68100
oklch(65.9% 0.141 71.9)
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 #3F95ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.007
- Dark Sky Blue #448EE4 ΔE 0.021
- Cornflower Blue #6495ED ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.036
- Soft Blue #6488EA ΔE 0.043
- Water Blue #0E87CC ΔE 0.067
- Faded Blue #658CBB ΔE 0.077
- Cornflower #6A79F7 ΔE 0.081
Use #3F95ED 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.