#258579
Closest named color: Teal (#008080). oklch(55.9% 0.089 182.9), rgb(37, 133, 121).
Aa
Black text reads best on this color (4.70:1).
About this color
#258579 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.089 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.025 away. Black text reads best on it, at 4.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.70:1 |
| White text | 4.45:1 |
Values
| HEX | #258579 |
| RGB | rgb(37, 133, 121) |
| HSL | hsl(173, 56%, 33%) |
| OKLCH | oklch(55.9% 0.089 182.9) |
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 #258579 | 4.45:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #258579 | 4.70:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #258579 text on white | 4.45:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #258579 text on black | 4.70:1 | AA | Lc -31.1 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CADEDA
oklch(88.5% 0.022 182.5)
-
Step 300
300
#A5C9C3
oklch(80.8% 0.039 184.1)
-
Step 400
400
#72AEA4
oklch(70.7% 0.064 182.8)
-
Step 500
500
#499A8E
oklch(63.2% 0.082 182.7)
-
Step 600
600 (this color)
#258579
oklch(55.9% 0.089 182.9)
-
Step 700
700
#137065
oklch(49.2% 0.083 182.7)
-
Step 800
800
#155B52
oklch(42.7% 0.068 182.5)
-
Step 900
900
#1B4B44
oklch(37.8% 0.053 182.3)
-
Step 950
950
#112C28
oklch(27% 0.034 182.9)
#258579 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) | #7F7D79 | 0.095 |
| Deuteranopia (no green cones) | #71737A | 0.089 |
| Tritanopia (no blue cones) | #008881 | 0.014 |
| Achromatopsia (no color) | #777777 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258579
#258579
oklch(55.9% 0.089 182.9)
- #9F5D6F
#9F5D6F
oklch(55.8% 0.089 2.8)
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 #258579, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.025
- Dark Cyan #008B8B ΔE 0.028
- Bluegreen #017A79 ΔE 0.039
- Deep Aqua #08787F ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.049
- Teal Green #0A9396 ΔE 0.051
- Viridian #1E9167 ΔE 0.053
- Teal Blue #01889F ΔE 0.057
Use #258579 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.