#309E83
Closest named color: Persian Green (#2A9D8F). oklch(63.1% 0.106 172.9), rgb(48, 158, 131).
Aa
Black text reads best on this color (6.34:1).
About this color
#309E83 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.106 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.019 away. Black text reads best on it, at 6.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.34:1 |
| White text | 3.31:1 |
Values
| HEX | #309E83 |
| RGB | rgb(48, 158, 131) |
| HSL | hsl(165, 53%, 40%) |
| OKLCH | oklch(63.1% 0.106 172.9) |
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 #309E83 | 3.31:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #309E83 | 6.34:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #309E83 text on white | 3.31:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #309E83 text on black | 6.34:1 | 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
#C7E0D7
oklch(88.6% 0.029 172)
-
Step 300
300
#9FCCBD
oklch(80.9% 0.052 172.6)
-
Step 400
400
#66B29B
oklch(70.8% 0.084 172.3)
-
Step 500
500 (this color)
#309E83
oklch(63.1% 0.106 172.9)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#074D3E
oklch(37.6% 0.069 173.3)
-
Step 950
950
#0A2D24
oklch(26.9% 0.043 172.7)
#309E83 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) | #999482 | 0.110 |
| Deuteranopia (no green cones) | #8A8985 | 0.105 |
| Tritanopia (no blue cones) | #00A096 | 0.028 |
| Achromatopsia (no color) | #8D8D8D | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309E83
#309E83
oklch(63.1% 0.106 172.9)
- #BB6D8F
#BB6D8F
oklch(63.1% 0.107 353)
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 #309E83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.019
- Ocean Green #3D9973 ΔE 0.023
- Blue Green #0F9B8E ΔE 0.024
- Sea #3C9992 ΔE 0.032
- Grey Teal #5E9B8A ΔE 0.039
- Jade #1FA774 ΔE 0.040
- Dull Teal #5F9E8F ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.045
Use #309E83 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.