#259B91
Closest named color: Persian Green (#2A9D8F). oklch(62.5% 0.101 186.3), rgb(37, 155, 145).
Aa
Black text reads best on this color (6.17:1).
About this color
#259B91 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.101 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.008 away. Black text reads best on it, at 6.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.17:1 |
| White text | 3.40:1 |
Values
| HEX | #259B91 |
| RGB | rgb(37, 155, 145) |
| HSL | hsl(175, 61%, 38%) |
| OKLCH | oklch(62.5% 0.101 186.3) |
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 #259B91 | 3.40:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #259B91 | 6.17:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #259B91 text on white | 3.40:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #259B91 text on black | 6.17:1 | AA | Lc -40.6 | 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
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6DFDC
oklch(88.4% 0.027 187.9)
-
Step 300
300
#9DCBC5
oklch(80.8% 0.049 186.4)
-
Step 400
400
#63B1A8
oklch(70.8% 0.079 186)
-
Step 500
500 (this color)
#259B91
oklch(62.5% 0.101 186.3)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#014D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#072D2A
oklch(27% 0.042 187.4)
#259B91 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) | #939291 | 0.108 |
| Deuteranopia (no green cones) | #828692 | 0.101 |
| Tritanopia (no blue cones) | #009F98 | 0.014 |
| Achromatopsia (no color) | #8B8B8B | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259B91
#259B91
oklch(62.5% 0.101 186.3)
- #BB6D7E
#BB6D7E
oklch(62.6% 0.101 6.4)
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 #259B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.008
- Blue Green #0F9B8E ΔE 0.009
- Sea #3C9992 ΔE 0.013
- Teal Green #0A9396 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.036
- Grey Teal #5E9B8A ΔE 0.040
- Ocean Green #3D9973 ΔE 0.042
- Dull Teal #5F9E8F ΔE 0.044
Use #259B91 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.