#3A9BC4
Closest named color: Faded Blue (#658CBB). oklch(65% 0.108 229.9), rgb(58, 155, 196).
Aa
Black text reads best on this color (6.66:1).
About this color
#3A9BC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.108 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.050 away. Black text reads best on it, at 6.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.66:1 |
| White text | 3.15:1 |
Values
| HEX | #3A9BC4 |
| RGB | rgb(58, 155, 196) |
| HSL | hsl(198, 54%, 50%) |
| OKLCH | oklch(65% 0.108 229.9) |
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 #3A9BC4 | 3.15:1 | AA large text | Lc -63.7 | Content text, not long reading |
| Black text on #3A9BC4 | 6.66:1 | AA | Lc 45.8 | Large or bold text, headings |
| #3A9BC4 text on white | 3.15:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #3A9BC4 text on black | 6.66:1 | AA | Lc -43.5 | 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
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C6DDE9
oklch(88.4% 0.03 230.3)
-
Step 300
300
#9EC8DC
oklch(80.9% 0.053 228.6)
-
Step 400
400
#66ABCB
oklch(70.8% 0.084 229.5)
-
Step 500
500 (this color)
#3A9BC4
oklch(65% 0.108 229.9)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#0A485F
oklch(37.7% 0.07 229.3)
-
Step 950
950
#0A2A38
oklch(26.9% 0.045 230.7)
#3A9BC4 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) | #8699C6 | 0.075 |
| Deuteranopia (no green cones) | #738BC3 | 0.064 |
| Tritanopia (no blue cones) | #00A6A9 | 0.063 |
| Achromatopsia (no color) | #919191 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A9BC4
#3A9BC4
oklch(65% 0.108 229.9)
- #C47B51
#C47B51
oklch(65.1% 0.108 49.9)
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 #3A9BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.050
- Blue NCS #118AB2 ΔE 0.058
- Dusty Blue #5A86AD ΔE 0.061
- Cadet Blue #5F9EA0 ΔE 0.063
- Cool Blue #4984B8 ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.063
- Greyblue #77A1B5 ΔE 0.064
- Off Blue #5684AE ΔE 0.065
Use #3A9BC4 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.