#3499DC
Closest named color: Dark Sky Blue (#448EE4). oklch(65.6% 0.135 242.5), rgb(52, 153, 220).
Aa
Black text reads best on this color (6.73:1).
About this color
#3499DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.135 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.035 away. Black text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #3499DC |
| RGB | rgb(52, 153, 220) |
| HSL | hsl(204, 71%, 53%) |
| OKLCH | oklch(65.6% 0.135 242.5) |
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 #3499DC | 3.11:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #3499DC | 6.73:1 | AA | Lc 46.3 | Large or bold text, headings |
| #3499DC text on white | 3.11:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #3499DC 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDF0
oklch(88.6% 0.037 241.8)
-
Step 300
300
#9CC6E8
oklch(80.8% 0.066 243.1)
-
Step 400
400
#61A8DD
oklch(70.6% 0.106 242.6)
-
Step 500
500 (this color)
#3499DC
oklch(65.6% 0.135 242.5)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#04466C
oklch(37.8% 0.088 242.2)
-
Step 950
950
#08293F
oklch(27% 0.055 242.5)
#3499DC 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) | #7A9ADF | 0.064 |
| Deuteranopia (no green cones) | #638BDB | 0.049 |
| Tritanopia (no blue cones) | #00AAB1 | 0.093 |
| Achromatopsia (no color) | #929292 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3499DC
#3499DC
oklch(65.6% 0.135 242.5)
- #CA7C27
#CA7C27
oklch(65.6% 0.135 62.8)
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 #3499DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.036
- Cornflower Blue #6495ED ΔE 0.049
- Water Blue #0E87CC ΔE 0.058
- Faded Blue #658CBB ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.063
- Soft Blue #6488EA ΔE 0.064
- Cool Blue #4984B8 ΔE 0.069
Use #3499DC 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.