#258F80
Closest named color: Dark Cyan (#008B8B). oklch(58.8% 0.096 181.2), rgb(37, 143, 128).
Aa
Black text reads best on this color (5.31:1).
About this color
#258F80 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.096 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.026 away. Black text reads best on it, at 5.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.31:1 |
| White text | 3.94:1 |
Values
| HEX | #258F80 |
| RGB | rgb(37, 143, 128) |
| HSL | hsl(172, 59%, 35%) |
| OKLCH | oklch(58.8% 0.096 181.2) |
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 #258F80 | 3.94:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #258F80 | 5.31:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #258F80 text on white | 3.94:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #258F80 text on black | 5.31:1 | AA | Lc -35.2 | 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 600.
-
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
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC2
oklch(80.9% 0.043 181.3)
-
Step 400
400
#6EAFA3
oklch(70.7% 0.069 181.2)
-
Step 500
500
#429B8D
oklch(63.2% 0.088 181.5)
-
Step 600
600 (this color)
#258F80
oklch(58.8% 0.096 181.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#0A5C51
oklch(42.7% 0.074 180.7)
-
Step 900
900
#164B43
oklch(37.6% 0.057 181.3)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#258F80 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) | #88867F | 0.101 |
| Deuteranopia (no green cones) | #7A7C81 | 0.096 |
| Tritanopia (no blue cones) | #00928A | 0.016 |
| Achromatopsia (no color) | #808080 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258F80
#258F80
oklch(58.8% 0.096 181.2)
- #AB6479
#AB6479
oklch(58.9% 0.095 1.4)
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 #258F80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.030
- Teal Green #0A9396 ΔE 0.032
- Blue Green #0F9B8E ΔE 0.035
- Sea #3C9992 ΔE 0.041
- Viridian #1E9167 ΔE 0.041
- Persian Green #2A9D8F ΔE 0.043
- Ocean Green #3D9973 ΔE 0.044
Use #258F80 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.