#388BAF
Closest named color: Blue NCS (#118AB2). oklch(60.2% 0.096 230), rgb(56, 139, 175).
Aa
Black text reads best on this color (5.48:1).
About this color
#388BAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.096 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.019 away. Black text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.48:1 |
| White text | 3.83:1 |
Values
| HEX | #388BAF |
| RGB | rgb(56, 139, 175) |
| HSL | hsl(198, 52%, 45%) |
| OKLCH | oklch(60.2% 0.096 230) |
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 #388BAF | 3.83:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #388BAF | 5.48:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #388BAF text on white | 3.83:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #388BAF text on black | 5.48:1 | AA | Lc -36.1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A2C7D9
oklch(80.9% 0.047 229)
-
Step 400
400
#6EAAC7
oklch(70.8% 0.075 230.1)
-
Step 500
500 (this color)
#388BAF
oklch(60.2% 0.096 230)
-
Step 600
600
#187EA4
oklch(55.6% 0.104 229.6)
-
Step 700
700
#036A8D
oklch(49.1% 0.097 230.1)
-
Step 800
800
#0D5672
oklch(42.6% 0.08 230.4)
-
Step 900
900
#16475C
oklch(37.5% 0.063 230.3)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#388BAF 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) | #7989B1 | 0.067 |
| Deuteranopia (no green cones) | #687DAE | 0.057 |
| Tritanopia (no blue cones) | #009597 | 0.058 |
| Achromatopsia (no color) | #828282 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #388BAF
#388BAF
oklch(60.2% 0.096 230)
- #AF6F4A
#AF6F4A
oklch(60.2% 0.096 50.2)
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 #388BAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.019
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.030
- Off Blue #5684AE ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.031
- Teal Blue #01889F ΔE 0.036
- Cerulean #457B9D ΔE 0.047
- Faded Blue #658CBB ΔE 0.048
Use #388BAF 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.