#388ECE
Closest named color: Water Blue (#0E87CC). oklch(62.4% 0.127 244.6), rgb(56, 142, 206).
Aa
Black text reads best on this color (5.92:1).
About this color
#388ECE is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.127 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #388ECE |
| RGB | rgb(56, 142, 206) |
| HSL | hsl(206, 60%, 51%) |
| OKLCH | oklch(62.4% 0.127 244.6) |
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 #388ECE | 3.54:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #388ECE | 5.92:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #388ECE text on white | 3.54:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #388ECE text on black | 5.92:1 | AA | Lc -39.0 | 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
#E0EBF5
oklch(93.5% 0.018 245.4)
-
Step 200
200
#C7DCEF
oklch(88.5% 0.035 245.5)
-
Step 300
300
#9FC6E6
oklch(80.9% 0.062 243.3)
-
Step 400
400
#69A7DA
oklch(70.7% 0.099 244.7)
-
Step 500
500 (this color)
#388ECE
oklch(62.4% 0.127 244.6)
-
Step 600
600
#0479BD
oklch(55.6% 0.137 244.5)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#015384
oklch(42.7% 0.106 244.4)
-
Step 900
900
#11456A
oklch(37.7% 0.083 244.6)
-
Step 950
950
#0D293E
oklch(27.1% 0.052 244.2)
#388ECE 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) | #7190D1 | 0.056 |
| Deuteranopia (no green cones) | #5C82CD | 0.042 |
| Tritanopia (no blue cones) | #009EA5 | 0.091 |
| Achromatopsia (no color) | #888888 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #388ECE
#388ECE
oklch(62.4% 0.127 244.6)
- #BB7524
#BB7524
oklch(62.4% 0.126 64.6)
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 #388ECE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.038
- Steel Blue #4682B4 ΔE 0.045
- Faded Blue #658CBB ΔE 0.046
- Blue NCS #118AB2 ΔE 0.049
- Off Blue #5684AE ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.053
Use #388ECE 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.