#3789A5
Closest named color: Blue NCS (#118AB2). oklch(59.2% 0.089 224), rgb(55, 137, 165).
Aa
Black text reads best on this color (5.28:1).
About this color
#3789A5 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.089 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.024 away. Black text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #3789A5 |
| RGB | rgb(55, 137, 165) |
| HSL | hsl(195, 50%, 43%) |
| OKLCH | oklch(59.2% 0.089 224) |
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 #3789A5 | 3.97:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #3789A5 | 5.28:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #3789A5 text on white | 3.97:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #3789A5 text on black | 5.28:1 | AA | Lc -34.8 | 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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A6C7D4
oklch(81% 0.04 223.7)
-
Step 400
400
#74AABE
oklch(70.8% 0.064 223.2)
-
Step 500
500
#4C94AE
oklch(63% 0.082 224.1)
-
Step 600
600 (this color)
#3789A5
oklch(59.2% 0.089 224)
-
Step 700
700
#1B6A83
oklch(49% 0.083 224.1)
-
Step 800
800
#1A576B
oklch(42.8% 0.069 224)
-
Step 900
900
#1D4857
oklch(37.8% 0.054 223.9)
-
Step 950
950
#122A33
oklch(27% 0.034 224.8)
#3789A5 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) | #7986A6 | 0.069 |
| Deuteranopia (no green cones) | #6A7BA5 | 0.061 |
| Tritanopia (no blue cones) | #009292 | 0.050 |
| Achromatopsia (no color) | #808080 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3789A5
#3789A5
oklch(59.2% 0.089 224)
- #AA6C51
#AA6C51
oklch(59.2% 0.089 44.2)
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 #3789A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.024
- Teal Blue #01889F ΔE 0.025
- Off Blue #5684AE ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.036
- Steel Blue #4682B4 ΔE 0.037
- Cerulean #457B9D ΔE 0.039
- Cool Blue #4984B8 ΔE 0.040
- Stormy Blue #507B9C ΔE 0.042
Use #3789A5 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.