#309580
Closest named color: Blue Green (#0F9B8E). oklch(60.6% 0.097 176.2), rgb(48, 149, 128).
Aa
Black text reads best on this color (5.73:1).
About this color
#309580 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.097 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.023 away. Black text reads best on it, at 5.73:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #309580 |
| RGB | rgb(48, 149, 128) |
| HSL | hsl(168, 51%, 39%) |
| OKLCH | oklch(60.6% 0.097 176.2) |
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 #309580 | 3.66:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #309580 | 5.73:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #309580 text on white | 3.66:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #309580 text on black | 5.73:1 | AA | Lc -37.8 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C8DFD8
oklch(88.5% 0.026 175.5)
-
Step 300
300
#A1CBBF
oklch(80.9% 0.048 175.7)
-
Step 400
400
#6AB09F
oklch(70.6% 0.076 176.7)
-
Step 500
500 (this color)
#309580
oklch(60.6% 0.097 176.2)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#0F4C40
oklch(37.6% 0.063 176.2)
-
Step 950
950
#0C2D26
oklch(27.1% 0.041 176.6)
#309580 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) | #8F8C7F | 0.101 |
| Deuteranopia (no green cones) | #818182 | 0.098 |
| Tritanopia (no blue cones) | #00978F | 0.023 |
| Achromatopsia (no color) | #868686 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309580
#309580
oklch(60.6% 0.097 176.2)
- #B06984
#B06984
oklch(60.7% 0.096 356)
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 #309580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.023
- Ocean Green #3D9973 ΔE 0.027
- Persian Green #2A9D8F ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.027
- Sea #3C9992 ΔE 0.029
- Teal Green #0A9396 ΔE 0.037
- Viridian #1E9167 ΔE 0.039
- Dark Cyan #008B8B ΔE 0.044
Use #309580 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.