#309E85
Closest named color: Persian Green (#2A9D8F). oklch(63.1% 0.105 174.3), rgb(48, 158, 133).
Aa
Black text reads best on this color (6.35:1).
About this color
#309E85 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.105 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.016 away. Black text reads best on it, at 6.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.35:1 |
| White text | 3.30:1 |
Values
| HEX | #309E85 |
| RGB | rgb(48, 158, 133) |
| HSL | hsl(166, 53%, 40%) |
| OKLCH | oklch(63.1% 0.105 174.3) |
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 #309E85 | 3.30:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #309E85 | 6.35:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #309E85 text on white | 3.30:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #309E85 text on black | 6.35:1 | AA | Lc -41.6 | 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
#E0EDE9
oklch(93.5% 0.015 175.7)
-
Step 200
200
#C7E0D8
oklch(88.6% 0.029 174.4)
-
Step 300
300
#9FCCBE
oklch(80.9% 0.051 174)
-
Step 400
400
#66B29D
oklch(70.8% 0.082 174.1)
-
Step 500
500 (this color)
#309E85
oklch(63.1% 0.105 174.3)
-
Step 600
600
#00876F
oklch(55.6% 0.106 174.3)
-
Step 700
700
#00715D
oklch(49% 0.093 174.7)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#074D3F
oklch(37.7% 0.068 174.6)
-
Step 950
950
#092D25
oklch(26.9% 0.043 175.1)
#309E85 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) | #999484 | 0.110 |
| Deuteranopia (no green cones) | #898987 | 0.104 |
| Tritanopia (no blue cones) | #00A097 | 0.026 |
| Achromatopsia (no color) | #8D8D8D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309E85
#309E85
oklch(63.1% 0.105 174.3)
- #BB6E8E
#BB6E8E
oklch(63.2% 0.105 354.1)
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 #309E85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.016
- Blue Green #0F9B8E ΔE 0.021
- Ocean Green #3D9973 ΔE 0.025
- Sea #3C9992 ΔE 0.030
- Grey Teal #5E9B8A ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.042
- Jade #1FA774 ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.044
Use #309E85 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.