#3389AA
Closest named color: Blue NCS (#118AB2). oklch(59.3% 0.095 227.3), rgb(51, 137, 170).
Aa
Black text reads best on this color (5.29:1).
About this color
#3389AA is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.095 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.017 away. Black text reads best on it, at 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #3389AA |
| RGB | rgb(51, 137, 170) |
| HSL | hsl(197, 54%, 43%) |
| OKLCH | oklch(59.3% 0.095 227.3) |
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 #3389AA | 3.96:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #3389AA | 5.29:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #3389AA text on white | 3.96:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #3389AA text on black | 5.29:1 | AA | Lc -35.0 | 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
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D6
oklch(81% 0.042 226.4)
-
Step 400
400
#72AAC2
oklch(70.8% 0.068 226.8)
-
Step 500
500
#4994B3
oklch(63.1% 0.088 227.6)
-
Step 600
600 (this color)
#3389AA
oklch(59.3% 0.095 227.3)
-
Step 700
700
#156A88
oklch(49.1% 0.089 227.7)
-
Step 800
800
#16576E
oklch(42.8% 0.073 226.5)
-
Step 900
900
#1B4759
oklch(37.6% 0.057 228.1)
-
Step 950
950
#112A34
oklch(27% 0.036 226.6)
#3389AA 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) | #7787AC | 0.069 |
| Deuteranopia (no green cones) | #677BAA | 0.060 |
| Tritanopia (no blue cones) | #009294 | 0.053 |
| Achromatopsia (no color) | #808080 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3389AA
#3389AA
oklch(59.3% 0.095 227.3)
- #AC6C4B
#AC6C4B
oklch(59.3% 0.094 47.6)
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 #3389AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.017
- Teal Blue #01889F ΔE 0.027
- Steel Blue #4682B4 ΔE 0.032
- Off Blue #5684AE ΔE 0.033
- Cool Blue #4984B8 ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.035
- Cerulean #457B9D ΔE 0.040
- Stormy Blue #507B9C ΔE 0.043
Use #3389AA 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.