#3E97DF
Closest named color: Dark Sky Blue (#448EE4). oklch(65.6% 0.137 246.5), rgb(62, 151, 223).
Aa
Black text reads best on this color (6.69:1).
About this color
#3E97DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.137 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.027 away. Black text reads best on it, at 6.69:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.69:1 |
| White text | 3.13:1 |
Values
| HEX | #3E97DF |
| RGB | rgb(62, 151, 223) |
| HSL | hsl(207, 72%, 56%) |
| OKLCH | oklch(65.6% 0.137 246.5) |
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 #3E97DF | 3.13:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #3E97DF | 6.69:1 | AA | Lc 46.0 | Large or bold text, headings |
| #3E97DF text on white | 3.13:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #3E97DF text on black | 6.69:1 | AA | Lc -43.7 | 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
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9EC5EA
oklch(80.8% 0.067 247.3)
-
Step 400
400
#66A7DF
oklch(70.7% 0.106 246)
-
Step 500
500 (this color)
#3E97DF
oklch(65.6% 0.137 246.5)
-
Step 600
600
#0078C2
oklch(55.6% 0.145 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#0D456E
oklch(37.8% 0.089 246.2)
-
Step 950
950
#0B2840
oklch(26.9% 0.056 247)
#3E97DF 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) | #769AE2 | 0.055 |
| Deuteranopia (no green cones) | #608BDE | 0.040 |
| Tritanopia (no blue cones) | #00A8B1 | 0.098 |
| Achromatopsia (no color) | #919191 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E97DF
#3E97DF
oklch(65.6% 0.137 246.5)
- #C87E1D
#C87E1D
oklch(65.7% 0.137 66.7)
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 #3E97DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.027
- Cornflower Blue #6495ED ΔE 0.041
- Soft Blue #6488EA ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.057
- Water Blue #0E87CC ΔE 0.058
- Faded Blue #658CBB ΔE 0.060
- Cool Blue #4984B8 ΔE 0.070
Use #3E97DF 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.