#3B91AA
Closest named color: Blue NCS (#118AB2). oklch(61.5% 0.089 220.3), rgb(59, 145, 170).
Aa
Black text reads best on this color (5.81:1).
About this color
#3B91AA is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.089 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.035 away. Black text reads best on it, at 5.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #3B91AA |
| RGB | rgb(59, 145, 170) |
| HSL | hsl(194, 48%, 45%) |
| OKLCH | oklch(61.5% 0.089 220.3) |
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 #3B91AA | 3.61:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #3B91AA | 5.81:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #3B91AA text on white | 3.61:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #3B91AA text on black | 5.81:1 | AA | Lc -38.2 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A2C8D4
oklch(80.9% 0.044 219)
-
Step 400
400
#6DABBF
oklch(70.6% 0.07 220.4)
-
Step 500
500 (this color)
#3B91AA
oklch(61.5% 0.089 220.3)
-
Step 600
600
#13809B
oklch(55.6% 0.097 220.4)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#09586B
oklch(42.7% 0.075 219.9)
-
Step 900
900
#154957
oklch(37.8% 0.058 219.4)
-
Step 950
950
#0F2B33
oklch(27.1% 0.037 219.3)
#3B91AA 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) | #828DAB | 0.075 |
| Deuteranopia (no green cones) | #7282AA | 0.066 |
| Tritanopia (no blue cones) | #009999 | 0.046 |
| Achromatopsia (no color) | #878787 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B91AA
#3B91AA
oklch(61.5% 0.089 220.3)
- #B3725B
#B3725B
oklch(61.6% 0.09 40.2)
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 #3B91AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.041
- Teal Blue #01889F ΔE 0.041
- Teal Green #0A9396 ΔE 0.041
- Off Blue #5684AE ΔE 0.044
- Cool Blue #4984B8 ΔE 0.049
- Sea #3C9992 ΔE 0.050
- Steel Blue #4682B4 ΔE 0.050
Use #3B91AA 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.