#309587
Closest named color: Blue Green (#0F9B8E). oklch(60.9% 0.094 182.1), rgb(48, 149, 135).
Aa
Black text reads best on this color (5.77:1).
About this color
#309587 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.094 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.019 away. Black text reads best on it, at 5.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #309587 |
| RGB | rgb(48, 149, 135) |
| HSL | hsl(172, 51%, 39%) |
| OKLCH | oklch(60.9% 0.094 182.1) |
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 #309587 | 3.63:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #309587 | 5.77:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #309587 text on white | 3.63:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #309587 text on black | 5.77:1 | AA | Lc -38.0 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C8DFDA
oklch(88.5% 0.025 181.2)
-
Step 300
300
#A1CBC3
oklch(81% 0.046 182.2)
-
Step 400
400
#6AB0A4
oklch(70.7% 0.073 182)
-
Step 500
500 (this color)
#309587
oklch(60.9% 0.094 182.1)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#0F4C44
oklch(37.7% 0.061 182.1)
-
Step 950
950
#0C2D28
oklch(27.1% 0.039 181.6)
#309587 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) | #8E8C86 | 0.100 |
| Deuteranopia (no green cones) | #808288 | 0.094 |
| Tritanopia (no blue cones) | #009891 | 0.018 |
| Achromatopsia (no color) | #868686 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309587
#309587
oklch(60.9% 0.094 182.1)
- #B16A7E
#B16A7E
oklch(60.8% 0.094 2.1)
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 #309587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.019
- Sea #3C9992 ΔE 0.021
- Dusty Teal #4C9085 ΔE 0.023
- Persian Green #2A9D8F ΔE 0.023
- Teal Green #0A9396 ΔE 0.028
- Ocean Green #3D9973 ΔE 0.036
- Dark Cyan #008B8B ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.044
Use #309587 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.