#388BF2
Closest named color: Dodger Blue (#1E90FF). oklch(63.9% 0.174 255.7), rgb(56, 139, 242).
Aa
Black text reads best on this color (6.14:1).
About this color
#388BF2 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.174 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.023 away. Black text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.14:1 |
| White text | 3.41:1 |
Values
| HEX | #388BF2 |
| RGB | rgb(56, 139, 242) |
| HSL | hsl(213, 88%, 58%) |
| OKLCH | oklch(63.9% 0.174 255.7) |
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 #388BF2 | 3.41:1 | AA large text | Lc -66.7 | Content text, not long reading |
| Black text on #388BF2 | 6.14:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #388BF2 text on white | 3.41:1 | AA large text | Lc 61.2 | Content text, not long reading |
| #388BF2 text on black | 6.14:1 | AA | Lc -40.4 | 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
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9CC3F7
oklch(80.8% 0.085 255.8)
-
Step 400
400
#64A2F4
oklch(70.6% 0.137 255.9)
-
Step 500
500 (this color)
#388BF2
oklch(63.9% 0.174 255.7)
-
Step 600
600
#0070DE
oklch(55.7% 0.188 255.7)
-
Step 700
700
#005EBC
oklch(49.2% 0.166 255.7)
-
Step 800
800
#004C9B
oklch(42.6% 0.144 255.8)
-
Step 900
900
#0E407C
oklch(37.6% 0.114 256)
-
Step 950
950
#0B2648
oklch(26.9% 0.071 255.8)
#388BF2 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) | #5794F6 | 0.038 |
| Deuteranopia (no green cones) | #3483F0 | 0.022 |
| Tritanopia (no blue cones) | #00A3B3 | 0.131 |
| Achromatopsia (no color) | #8B8B8B | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #388BF2
#388BF2
oklch(63.9% 0.174 255.7)
- #BA7E00
#BA7E00
oklch(63.8% 0.134 75.5)
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 #388BF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.023
- Dark Sky Blue #448EE4 ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.032
- Soft Blue #6488EA ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.051
- Clear Blue #247AFD ΔE 0.052
- Cornflower #6A79F7 ΔE 0.061
- Water Blue #0E87CC ΔE 0.063
Use #388BF2 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.