#409F9B
Closest named color: Sea (#3C9992). oklch(64.6% 0.089 191.3), rgb(64, 159, 155).
Aa
Black text reads best on this color (6.65:1).
About this color
#409F9B is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.089 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.020 away. Black text reads best on it, at 6.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.65:1 |
| White text | 3.15:1 |
Values
| HEX | #409F9B |
| RGB | rgb(64, 159, 155) |
| HSL | hsl(177, 43%, 44%) |
| OKLCH | oklch(64.6% 0.089 191.3) |
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 #409F9B | 3.15:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #409F9B | 6.65:1 | AA | Lc 45.6 | Large or bold text, headings |
| #409F9B text on white | 3.15:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #409F9B text on black | 6.65:1 | AA | Lc -43.3 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DFDD
oklch(88.6% 0.025 190.4)
-
Step 300
300
#A1CAC7
oklch(80.9% 0.044 190.8)
-
Step 400
400
#6BAFAB
oklch(70.8% 0.069 190.9)
-
Step 500
500 (this color)
#409F9B
oklch(64.6% 0.089 191.3)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#114B49
oklch(37.6% 0.057 191.6)
-
Step 950
950
#0D2C2B
oklch(27% 0.036 192.3)
#409F9B 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) | #96979B | 0.094 |
| Deuteranopia (no green cones) | #878C9C | 0.088 |
| Tritanopia (no blue cones) | #00A39E | 0.023 |
| Achromatopsia (no color) | #919191 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409F9B
#409F9B
oklch(64.6% 0.089 191.3)
- #BD7780
#BD7780
oklch(64.6% 0.088 11.5)
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 #409F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.020
- Persian Green #2A9D8F ΔE 0.024
- Cadet Blue #5F9EA0 ΔE 0.028
- Dull Teal #5F9E8F ΔE 0.028
- Grey Teal #5E9B8A ΔE 0.031
- Blue Green #0F9B8E ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.046
- Teal Green #0A9396 ΔE 0.046
Use #409F9B 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.