#3B8DB2
Closest named color: Blue NCS (#118AB2). oklch(60.9% 0.096 230.9), rgb(59, 141, 178).
Aa
Black text reads best on this color (5.63:1).
About this color
#3B8DB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.096 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.023 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #3B8DB2 |
| RGB | rgb(59, 141, 178) |
| HSL | hsl(199, 50%, 46%) |
| OKLCH | oklch(60.9% 0.096 230.9) |
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 #3B8DB2 | 3.72:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #3B8DB2 | 5.63:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #3B8DB2 text on white | 3.72:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #3B8DB2 text on black | 5.63:1 | AA | Lc -37.1 | 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
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A2C7DA
oklch(80.9% 0.048 230.4)
-
Step 400
400
#6EAAC7
oklch(70.8% 0.075 230.1)
-
Step 500
500 (this color)
#3B8DB2
oklch(60.9% 0.096 230.9)
-
Step 600
600
#197EA5
oklch(55.7% 0.104 230.4)
-
Step 700
700
#046A8E
oklch(49.2% 0.098 230.9)
-
Step 800
800
#0D5673
oklch(42.6% 0.081 231.3)
-
Step 900
900
#16475D
oklch(37.6% 0.064 231.5)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#3B8DB2 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) | #7A8BB4 | 0.066 |
| Deuteranopia (no green cones) | #6A7FB1 | 0.057 |
| Tritanopia (no blue cones) | #009799 | 0.060 |
| Achromatopsia (no color) | #848484 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B8DB2
#3B8DB2
oklch(60.9% 0.096 230.9)
- #B1714B
#B1714B
oklch(60.9% 0.097 50.8)
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 #3B8DB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.031
- Cool Blue #4984B8 ΔE 0.031
- Off Blue #5684AE ΔE 0.031
- Steel Blue #4682B4 ΔE 0.033
- Teal Blue #01889F ΔE 0.042
- Faded Blue #658CBB ΔE 0.043
- Water Blue #0E87CC ΔE 0.051
Use #3B8DB2 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.