#3D88ED
Closest named color: Dark Sky Blue (#448EE4). oklch(63.1% 0.169 256.9), rgb(61, 136, 237).
Aa
Black text reads best on this color (5.94:1).
About this color
#3D88ED is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.169 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.024 away. Black text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #3D88ED |
| RGB | rgb(61, 136, 237) |
| HSL | hsl(214, 83%, 58%) |
| OKLCH | oklch(63.1% 0.169 256.9) |
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 #3D88ED | 3.53:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #3D88ED | 5.94:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #3D88ED text on white | 3.53:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #3D88ED text on black | 5.94:1 | AA | Lc -39.2 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9FC3F6
oklch(80.9% 0.082 257.1)
-
Step 400
400
#69A2F2
oklch(70.7% 0.132 257)
-
Step 500
500 (this color)
#3D88ED
oklch(63.1% 0.169 256.9)
-
Step 600
600
#166FDC
oklch(55.6% 0.185 257)
-
Step 700
700
#045CBF
oklch(49.1% 0.172 257)
-
Step 800
800
#0B4C9A
oklch(42.7% 0.141 256.8)
-
Step 900
900
#14407B
oklch(37.7% 0.111 257.2)
-
Step 950
950
#0D2648
oklch(27% 0.07 257)
#3D88ED 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) | #5691F1 | 0.035 |
| Deuteranopia (no green cones) | #3581EB | 0.020 |
| Tritanopia (no blue cones) | #00A0AF | 0.131 |
| Achromatopsia (no color) | #888888 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D88ED
#3D88ED
oklch(63.1% 0.169 256.9)
- #B57D00
#B57D00
oklch(63.1% 0.132 77.3)
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 #3D88ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.024
- Dodger Blue #1E90FF ΔE 0.032
- Soft Blue #6488EA ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.037
- Clear Blue #247AFD ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.054
- Water Blue #0E87CC ΔE 0.057
- Cornflower #6A79F7 ΔE 0.057
Use #3D88ED 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.