#388FC3
Closest named color: Cool Blue (#4984B8). oklch(62.1% 0.114 238.8), rgb(56, 143, 195).
Aa
Black text reads best on this color (5.88:1).
About this color
#388FC3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.114 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.032 away. Black text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #388FC3 |
| RGB | rgb(56, 143, 195) |
| HSL | hsl(202, 55%, 49%) |
| OKLCH | oklch(62.1% 0.114 238.8) |
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 #388FC3 | 3.56:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #388FC3 | 5.88:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #388FC3 text on white | 3.56:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #388FC3 text on black | 5.88:1 | AA | Lc -38.7 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#A0C6E1
oklch(80.8% 0.056 239.3)
-
Step 400
400
#6AA9D2
oklch(70.8% 0.089 238.3)
-
Step 500
500 (this color)
#388FC3
oklch(62.1% 0.114 238.8)
-
Step 600
600
#067BB3
oklch(55.5% 0.124 239.2)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#02557D
oklch(42.8% 0.095 238.8)
-
Step 900
900
#124664
oklch(37.6% 0.074 239)
-
Step 950
950
#0D293B
oklch(26.9% 0.047 240.1)
#388FC3 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) | #778FC5 | 0.062 |
| Deuteranopia (no green cones) | #6482C2 | 0.050 |
| Tritanopia (no blue cones) | #009CA1 | 0.076 |
| Achromatopsia (no color) | #888888 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #388FC3
#388FC3
oklch(62.1% 0.114 238.8)
- #B87439
#B87439
oklch(62% 0.113 59.2)
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 #388FC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.032
- Blue NCS #118AB2 ΔE 0.036
- Water Blue #0E87CC ΔE 0.036
- Steel Blue #4682B4 ΔE 0.038
- Faded Blue #658CBB ΔE 0.040
- Off Blue #5684AE ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.053
Use #388FC3 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.