#258F7E
Closest named color: Dark Cyan (#008B8B). oklch(58.7% 0.097 179.5), rgb(37, 143, 126).
Aa
Black text reads best on this color (5.30:1).
About this color
#258F7E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.097 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.028 away. Black text reads best on it, at 5.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #258F7E |
| RGB | rgb(37, 143, 126) |
| HSL | hsl(170, 59%, 35%) |
| OKLCH | oklch(58.7% 0.097 179.5) |
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 #258F7E | 3.95:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #258F7E | 5.30:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #258F7E text on white | 3.95:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #258F7E text on black | 5.30:1 | AA | Lc -35.1 | 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
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A3CAC1
oklch(80.8% 0.043 179.5)
-
Step 400
400
#6EAFA2
oklch(70.6% 0.07 180.1)
-
Step 500
500
#429B8B
oklch(63.1% 0.089 179.6)
-
Step 600
600 (this color)
#258F7E
oklch(58.7% 0.097 179.5)
-
Step 700
700
#007162
oklch(49.1% 0.09 179.3)
-
Step 800
800
#0A5C50
oklch(42.7% 0.075 179.5)
-
Step 900
900
#164C42
oklch(37.8% 0.059 178.3)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#258F7E 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) | #89867D | 0.102 |
| Deuteranopia (no green cones) | #7A7B7F | 0.098 |
| Tritanopia (no blue cones) | #00918A | 0.018 |
| Achromatopsia (no color) | #808080 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258F7E
#258F7E
oklch(58.7% 0.097 179.5)
- #AB637B
#AB637B
oklch(58.8% 0.097 359.1)
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 #258F7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.031
- Teal Green #0A9396 ΔE 0.035
- Blue Green #0F9B8E ΔE 0.036
- Viridian #1E9167 ΔE 0.038
- Sea #3C9992 ΔE 0.042
- Ocean Green #3D9973 ΔE 0.042
- Persian Green #2A9D8F ΔE 0.044
Use #258F7E 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.