#3DA3EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(69.1% 0.145 245), rgb(61, 163, 239).
Aa
Black text reads best on this color (7.68:1).
About this color
#3DA3EF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.145 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.037 away. Black text reads best on it, at 7.68:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.68:1 |
| White text | 2.73:1 |
Values
| HEX | #3DA3EF |
| RGB | rgb(61, 163, 239) |
| HSL | hsl(206, 85%, 59%) |
| OKLCH | oklch(69.1% 0.145 245) |
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 #3DA3EF | 2.73:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #3DA3EF | 7.68:1 | AAA | Lc 51.5 | Large or bold text, headings |
| #3DA3EF text on white | 2.73:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #3DA3EF text on black | 7.68:1 | AAA | Lc -49.4 | 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 400.
-
Step 50
50
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCECFB
oklch(93.6% 0.027 246.3)
-
Step 200
200
#BEDDF9
oklch(88.4% 0.051 245.7)
-
Step 300
300
#8EC7F8
oklch(80.8% 0.091 245.2)
-
Step 400
400 (this color)
#3DA3EF
oklch(69.1% 0.145 245)
-
Step 500
500
#0090E2
oklch(63.1% 0.159 245)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#3DA3EF 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) | #80A6F2 | 0.062 |
| Deuteranopia (no green cones) | #6795EE | 0.046 |
| Tritanopia (no blue cones) | #00B5BE | 0.103 |
| Achromatopsia (no color) | #9C9C9C | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3DA3EF
#3DA3EF
oklch(69.1% 0.145 245)
- #D88620
#D88620
oklch(69.1% 0.145 65.1)
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 #3DA3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.056
- Dodger Blue #1E90FF ΔE 0.064
- Soft Blue #6488EA ΔE 0.073
- Deep Sky Blue #00BFFF ΔE 0.073
- Periwinkle Blue #8F99FB ΔE 0.085
- Turquoise Blue #06B1C4 ΔE 0.087
Use #3DA3EF 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.