#309F89
Closest named color: Persian Green (#2A9D8F). oklch(63.5% 0.104 176.6), rgb(48, 159, 137).
Aa
Black text reads best on this color (6.44:1).
About this color
#309F89 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.104 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), 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 (0.104) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.44:1 |
| White text | 3.25:1 |
Values
| HEX | #309F89 |
| RGB | rgb(48, 159, 137) |
| HSL | hsl(168, 54%, 41%) |
| OKLCH | oklch(63.5% 0.104 176.6) |
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 #309F89 | 3.25:1 | AA large text | Lc -65.0 | Content text, not long reading |
| Black text on #309F89 | 6.44:1 | AA | Lc 44.5 | Non-text elements, placeholder text |
| #309F89 text on white | 3.25:1 | AA large text | Lc 59.5 | Large or bold text, headings |
| #309F89 text on black | 6.44:1 | AA | Lc -42.2 | 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
#9ECCC0
oklch(80.9% 0.051 177.2)
-
Step 400
400
#65B19F
oklch(70.6% 0.081 176.8)
-
Step 500
500 (this color)
#309F89
oklch(63.5% 0.104 176.6)
-
Step 600
600
#008772
oklch(55.7% 0.104 176.6)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#064D41
oklch(37.7% 0.067 177.2)
-
Step 950
950
#092D26
oklch(26.9% 0.043 177.4)
#309F89 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) | #999588 | 0.109 |
| Deuteranopia (no green cones) | #8A8A8B | 0.104 |
| Tritanopia (no blue cones) | #00A198 | 0.022 |
| Achromatopsia (no color) | #8E8E8E | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309F89
#309F89
oklch(63.5% 0.104 176.6)
- #BD6F8C
#BD6F8C
oklch(63.6% 0.104 356.7)
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 #309F89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.013
- Blue Green #0F9B8E ΔE 0.020
- Sea #3C9992 ΔE 0.027
- Ocean Green #3D9973 ΔE 0.031
- Grey Teal #5E9B8A ΔE 0.036
- Dull Teal #5F9E8F ΔE 0.038
- Dusty Teal #4C9085 ΔE 0.045
- Jade #1FA774 ΔE 0.045
Use #309F89 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.