#3DA9F3
Closest named color: Chefchaouen Blue (#4895EF). oklch(70.7% 0.145 243.1), rgb(61, 169, 243).
Aa
Black text reads best on this color (8.16:1).
About this color
#3DA9F3 is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.145 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.053 away. Black text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #3DA9F3 |
| RGB | rgb(61, 169, 243) |
| HSL | hsl(204, 88%, 60%) |
| OKLCH | oklch(70.7% 0.145 243.1) |
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 #3DA9F3 | 2.57:1 | Fails | Lc -55.0 | Large or bold text, headings |
| Black text on #3DA9F3 | 8.16:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #3DA9F3 text on white | 2.57:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #3DA9F3 text on black | 8.16:1 | AAA | Lc -52.0 | 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
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BDDEF8
oklch(88.5% 0.05 241.9)
-
Step 300
300
#8CC8F7
oklch(80.9% 0.091 242.8)
-
Step 400
400 (this color)
#3DA9F3
oklch(70.7% 0.145 243.1)
-
Step 500
500
#0091DD
oklch(63.1% 0.152 242.9)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#00466E
oklch(37.8% 0.091 242.8)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#3DA9F3 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) | #87ABF6 | 0.067 |
| Deuteranopia (no green cones) | #6D9AF2 | 0.051 |
| Tritanopia (no blue cones) | #00BBC3 | 0.101 |
| Achromatopsia (no color) | #A1A1A1 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3DA9F3
#3DA9F3
oklch(70.7% 0.145 243.1)
- #DF8A2C
#DF8A2C
oklch(70.8% 0.145 63.2)
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 #3DA9F3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.058
- Dark Sky Blue #448EE4 ΔE 0.072
- Dodger Blue #1E90FF ΔE 0.077
- Turquoise Blue #06B1C4 ΔE 0.083
- Carolina Blue #8AB8FE ΔE 0.085
- Periwinkle Blue #8F99FB ΔE 0.086
Use #3DA9F3 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.