#258F7A
Closest named color: Viridian (#1E9167). oklch(58.6% 0.099 176.2), rgb(37, 143, 122).
Aa
Black text reads best on this color (5.28:1).
About this color
#258F7A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.099 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.031 away. Black text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #258F7A |
| RGB | rgb(37, 143, 122) |
| HSL | hsl(168, 59%, 35%) |
| OKLCH | oklch(58.6% 0.099 176.2) |
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 #258F7A | 3.97:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #258F7A | 5.28:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #258F7A text on white | 3.97:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #258F7A text on black | 5.28:1 | AA | Lc -35.0 | 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 600.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A3CABF
oklch(80.8% 0.044 176.1)
-
Step 400
400
#6FAF9F
oklch(70.6% 0.07 176.6)
-
Step 500
500
#429B87
oklch(63% 0.091 176.1)
-
Step 600
600 (this color)
#258F7A
oklch(58.6% 0.099 176.2)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#0B5C4D
oklch(42.6% 0.076 175.9)
-
Step 900
900
#164C40
oklch(37.8% 0.06 175.3)
-
Step 950
950
#0F2C26
oklch(26.9% 0.037 177.8)
#258F7A 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) | #898679 | 0.103 |
| Deuteranopia (no green cones) | #7B7B7C | 0.099 |
| Tritanopia (no blue cones) | #009189 | 0.022 |
| Achromatopsia (no color) | #808080 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258F7A
#258F7A
oklch(58.6% 0.099 176.2)
- #AA627E
#AA627E
oklch(58.6% 0.099 355.8)
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 #258F7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.031
- Dark Cyan #008B8B ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.034
- Blue Green #0F9B8E ΔE 0.039
- Ocean Green #3D9973 ΔE 0.039
- Teal Green #0A9396 ΔE 0.040
- Sea #3C9992 ΔE 0.046
- Persian Green #2A9D8F ΔE 0.046
Use #258F7A 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.