#309599
Closest named color: Teal Green (#0A9396). oklch(61.5% 0.09 198.9), rgb(48, 149, 153).
Aa
Black text reads best on this color (5.88:1).
About this color
#309599 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.090 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Green (#0A9396), ΔE 0.017 away. Black text reads best on it, at 5.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Teal Green (#0A9396) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #309599 |
| RGB | rgb(48, 149, 153) |
| HSL | hsl(182, 52%, 39%) |
| OKLCH | oklch(61.5% 0.09 198.9) |
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 #309599 | 3.56:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #309599 | 5.88:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #309599 text on white | 3.56:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #309599 text on black | 5.88:1 | AA | Lc -38.7 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1EDED
oklch(93.7% 0.013 196.9)
-
Step 200
200
#C7DEDF
oklch(88.4% 0.025 199.9)
-
Step 300
300
#A0CACB
oklch(80.9% 0.044 198.1)
-
Step 400
400
#68AEB1
oklch(70.6% 0.071 199.2)
-
Step 500
500 (this color)
#309599
oklch(61.5% 0.09 198.9)
-
Step 600
600
#008488
oklch(55.7% 0.095 198.5)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5E
oklch(42.8% 0.073 198.7)
-
Step 900
900
#0D4B4D
oklch(37.7% 0.059 198.3)
-
Step 950
950
#0B2C2D
oklch(27% 0.038 198)
#309599 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) | #8A8E99 | 0.092 |
| Deuteranopia (no green cones) | #7B839A | 0.086 |
| Tritanopia (no blue cones) | #009A96 | 0.021 |
| Achromatopsia (no color) | #878787 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309599
#309599
oklch(61.5% 0.09 198.9)
- #B56E6F
#B56E6F
oklch(61.6% 0.091 19.1)
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 #309599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Green #0A9396 ΔE 0.017
- Sea #3C9992 ΔE 0.020
- Blue Green #0F9B8E ΔE 0.031
- Dusty Teal #4C9085 ΔE 0.032
- Persian Green #2A9D8F ΔE 0.033
- Dark Cyan #008B8B ΔE 0.040
- Teal Blue #01889F ΔE 0.048
- Grey Teal #5E9B8A ΔE 0.049
Use #309599 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.