#3989A9
Closest named color: Blue NCS (#118AB2). oklch(59.4% 0.091 227.7), rgb(57, 137, 169).
Aa
Black text reads best on this color (5.32:1).
About this color
#3989A9 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.091 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.021 away. Black text reads best on it, at 5.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #3989A9 |
| RGB | rgb(57, 137, 169) |
| HSL | hsl(197, 50%, 44%) |
| OKLCH | oklch(59.4% 0.091 227.7) |
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 #3989A9 | 3.94:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #3989A9 | 5.32:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #3989A9 text on white | 3.94:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #3989A9 text on black | 5.32:1 | AA | Lc -35.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A3C7D7
oklch(80.9% 0.045 226.7)
-
Step 400
400
#70AAC4
oklch(70.8% 0.071 228)
-
Step 500
500 (this color)
#3989A9
oklch(59.4% 0.091 227.7)
-
Step 600
600
#1E7EA1
oklch(55.6% 0.099 228.1)
-
Step 700
700
#0D6A89
oklch(49% 0.092 227.7)
-
Step 800
800
#115770
oklch(42.8% 0.077 227.7)
-
Step 900
900
#18485A
oklch(37.8% 0.059 226.5)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#3989A9 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) | #7887AB | 0.067 |
| Deuteranopia (no green cones) | #697BA9 | 0.059 |
| Tritanopia (no blue cones) | #009293 | 0.055 |
| Achromatopsia (no color) | #808080 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3989A9
#3989A9
oklch(59.4% 0.091 227.7)
- #AB6D4D
#AB6D4D
oklch(59.4% 0.092 47.7)
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 #3989A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.021
- Teal Blue #01889F ΔE 0.029
- Off Blue #5684AE ΔE 0.031
- Steel Blue #4682B4 ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.032
- Cool Blue #4984B8 ΔE 0.034
- Cerulean #457B9D ΔE 0.040
- Stormy Blue #507B9C ΔE 0.042
Use #3989A9 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.