#3E7FE3
Closest named color: Dark Sky Blue (#448EE4). oklch(60.5% 0.166 258.9), rgb(62, 127, 227).
Aa
Black text reads best on this color (5.34:1).
About this color
#3E7FE3 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.166 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.041 away. Black text reads best on it, at 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.34:1 |
| White text | 3.92:1 |
Values
| HEX | #3E7FE3 |
| RGB | rgb(62, 127, 227) |
| HSL | hsl(216, 75%, 57%) |
| OKLCH | oklch(60.5% 0.166 258.9) |
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 #3E7FE3 | 3.92:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #3E7FE3 | 5.34:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #3E7FE3 text on white | 3.92:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #3E7FE3 text on black | 5.34:1 | AA | Lc -35.4 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF8
oklch(88.6% 0.045 258.8)
-
Step 300
300
#A1C2F5
oklch(80.8% 0.081 259)
-
Step 400
400
#6EA1F1
oklch(70.7% 0.13 259.1)
-
Step 500
500 (this color)
#3E7FE3
oklch(60.5% 0.166 258.9)
-
Step 600
600
#266EDA
oklch(55.5% 0.18 258.9)
-
Step 700
700
#185BBD
oklch(49% 0.168 258.9)
-
Step 800
800
#174B99
oklch(42.6% 0.139 259)
-
Step 900
900
#1A407A
oklch(37.8% 0.108 258.8)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#3E7FE3 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) | #4D89E7 | 0.032 |
| Deuteranopia (no green cones) | #2C79E1 | 0.022 |
| Tritanopia (no blue cones) | #0096A6 | 0.129 |
| Achromatopsia (no color) | #808080 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E7FE3
#3E7FE3
oklch(60.5% 0.166 258.9)
- #AA7700
#AA7700
oklch(60.6% 0.126 78.7)
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 #3E7FE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.041
- Clear Blue #247AFD ΔE 0.045
- Soft Blue #6488EA ΔE 0.048
- Water Blue #0E87CC ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.056
- Royal Blue #4169E1 ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Cornflower #6A79F7 ΔE 0.057
Use #3E7FE3 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.