#3690B2
Closest named color: Blue NCS (#118AB2). oklch(61.5% 0.098 226.9), rgb(54, 144, 178).
Aa
Black text reads best on this color (5.78:1).
About this color
#3690B2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.098 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.026 away. Black text reads best on it, at 5.78:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.78:1 |
| White text | 3.62:1 |
Values
| HEX | #3690B2 |
| RGB | rgb(54, 144, 178) |
| HSL | hsl(196, 53%, 45%) |
| OKLCH | oklch(61.5% 0.098 226.9) |
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 #3690B2 | 3.62:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #3690B2 | 5.78:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #3690B2 text on white | 3.62:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #3690B2 text on black | 5.78:1 | AA | Lc -38.1 | 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
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C8D9
oklch(81% 0.048 226.3)
-
Step 400
400
#6BABC6
oklch(70.8% 0.076 226.8)
-
Step 500
500 (this color)
#3690B2
oklch(61.5% 0.098 226.9)
-
Step 600
600
#047FA3
oklch(55.6% 0.106 226.6)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#015772
oklch(42.6% 0.083 227.7)
-
Step 900
900
#12485C
oklch(37.7% 0.064 227.4)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#3690B2 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) | #7E8DB4 | 0.073 |
| Deuteranopia (no green cones) | #6D81B2 | 0.064 |
| Tritanopia (no blue cones) | #009A9B | 0.056 |
| Achromatopsia (no color) | #868686 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3690B2
#3690B2
oklch(61.5% 0.098 226.9)
- #B57150
#B57150
oklch(61.4% 0.098 46.3)
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 #3690B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.037
- Off Blue #5684AE ΔE 0.039
- Cool Blue #4984B8 ΔE 0.040
- Steel Blue #4682B4 ΔE 0.042
- Teal Blue #01889F ΔE 0.043
- Faded Blue #658CBB ΔE 0.047
- Teal Green #0A9396 ΔE 0.052
Use #3690B2 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.