#338EDC
Closest named color: Dark Sky Blue (#448EE4). oklch(63.1% 0.145 248.5), rgb(51, 142, 220).
Aa
Black text reads best on this color (6.04:1).
About this color
#338EDC is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.145 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.018 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #338EDC |
| RGB | rgb(51, 142, 220) |
| HSL | hsl(208, 71%, 53%) |
| OKLCH | oklch(63.1% 0.145 248.5) |
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 #338EDC | 3.47:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #338EDC | 6.04:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #338EDC text on white | 3.47:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #338EDC text on black | 6.04:1 | AA | Lc -39.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9DC5ED
oklch(80.9% 0.071 248.7)
-
Step 400
400
#65A6E4
oklch(70.7% 0.113 248.6)
-
Step 500
500 (this color)
#338EDC
oklch(63.1% 0.145 248.5)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#0C4471
oklch(37.8% 0.094 248.5)
-
Step 950
950
#0A2842
oklch(27% 0.06 248.4)
#338EDC 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) | #6A92DF | 0.051 |
| Deuteranopia (no green cones) | #5183DA | 0.034 |
| Tritanopia (no blue cones) | #00A1AB | 0.105 |
| Achromatopsia (no color) | #8A8A8A | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338EDC
#338EDC
oklch(63.1% 0.145 248.5)
- #BE7700
#BE7700
oklch(63% 0.138 68.8)
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 #338EDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.018
- Water Blue #0E87CC ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.037
- Soft Blue #6488EA ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.055
- Cool Blue #4984B8 ΔE 0.056
- Faded Blue #658CBB ΔE 0.062
Use #338EDC 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.