#259587
Closest named color: Blue Green (#0F9B8E). oklch(60.6% 0.099 182.6), rgb(37, 149, 135).
Aa
Black text reads best on this color (5.72:1).
About this color
#259587 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.099 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.017 away. Black text reads best on it, at 5.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.72:1 |
| White text | 3.66:1 |
Values
| HEX | #259587 |
| RGB | rgb(37, 149, 135) |
| HSL | hsl(173, 60%, 36%) |
| OKLCH | oklch(60.6% 0.099 182.6) |
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 #259587 | 3.66:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #259587 | 5.72:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #259587 text on white | 3.66:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #259587 text on black | 5.72:1 | AA | Lc -37.8 | 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
#E0EDEA
oklch(93.6% 0.014 180.7)
-
Step 200
200
#C7DFDA
oklch(88.4% 0.026 181.8)
-
Step 300
300
#9FCBC3
oklch(80.8% 0.048 182.7)
-
Step 400
400
#66B1A5
oklch(70.8% 0.077 182.6)
-
Step 500
500 (this color)
#259587
oklch(60.6% 0.099 182.6)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#074C44
oklch(37.5% 0.064 182.6)
-
Step 950
950
#0A2D28
oklch(27.1% 0.041 182)
#259587 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) | #8E8C87 | 0.105 |
| Deuteranopia (no green cones) | #7E8188 | 0.098 |
| Tritanopia (no blue cones) | #009891 | 0.015 |
| Achromatopsia (no color) | #858585 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259587
#259587
oklch(60.6% 0.099 182.6)
- #B3687D
#B3687D
oklch(60.7% 0.099 2.4)
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 #259587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.017
- Persian Green #2A9D8F ΔE 0.025
- Sea #3C9992 ΔE 0.025
- Teal Green #0A9396 ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.027
- Dark Cyan #008B8B ΔE 0.036
- Ocean Green #3D9973 ΔE 0.037
- Viridian #1E9167 ΔE 0.047
Use #259587 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.