#409D91
Closest named color: Sea (#3C9992). oklch(63.7% 0.09 183.7), rgb(64, 157, 145).
Aa
Black text reads best on this color (6.44:1).
About this color
#409D91 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.090 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.013 away. Black text reads best on it, at 6.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.44:1 |
| White text | 3.25:1 |
Values
| HEX | #409D91 |
| RGB | rgb(64, 157, 145) |
| HSL | hsl(172, 42%, 43%) |
| OKLCH | oklch(63.7% 0.09 183.7) |
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 #409D91 | 3.25:1 | AA large text | Lc -65.0 | Content text, not long reading |
| Black text on #409D91 | 6.44:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #409D91 text on white | 3.25:1 | AA large text | Lc 59.6 | Large or bold text, headings |
| #409D91 text on black | 6.44:1 | AA | Lc -42.1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A2CAC3
oklch(80.8% 0.044 183.4)
-
Step 400
400
#6CAFA5
oklch(70.6% 0.07 183.8)
-
Step 500
500 (this color)
#409D91
oklch(63.7% 0.09 183.7)
-
Step 600
600
#078579
oklch(55.5% 0.097 183.8)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#035C53
oklch(42.7% 0.075 183.3)
-
Step 900
900
#134C45
oklch(37.8% 0.059 183.3)
-
Step 950
950
#0E2C28
oklch(26.9% 0.036 183.6)
#409D91 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) | #969591 | 0.095 |
| Deuteranopia (no green cones) | #888A92 | 0.091 |
| Tritanopia (no blue cones) | #00A099 | 0.023 |
| Achromatopsia (no color) | #8E8E8E | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409D91
#409D91
oklch(63.7% 0.09 183.7)
- #B97485
#B97485
oklch(63.7% 0.089 3.9)
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 #409D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.013
- Persian Green #2A9D8F ΔE 0.014
- Blue Green #0F9B8E ΔE 0.024
- Grey Teal #5E9B8A ΔE 0.025
- Dull Teal #5F9E8F ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.037
- Cadet Blue #5F9EA0 ΔE 0.037
- Teal Green #0A9396 ΔE 0.043
Use #409D91 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.