#258583
Closest named color: Dark Cyan (#008B8B). oklch(56.3% 0.086 192.9), rgb(37, 133, 131).
Aa
Black text reads best on this color (4.76:1).
About this color
#258583 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.086 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.019 away. Black text reads best on it, at 4.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.76:1 |
| White text | 4.41:1 |
Values
| HEX | #258583 |
| RGB | rgb(37, 133, 131) |
| HSL | hsl(179, 56%, 33%) |
| OKLCH | oklch(56.3% 0.086 192.9) |
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 #258583 | 4.41:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #258583 | 4.76:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #258583 text on white | 4.41:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #258583 text on black | 4.76:1 | AA | Lc -31.4 | 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
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A5C9C7
oklch(80.9% 0.038 192.3)
-
Step 400
400
#72ADAB
oklch(70.7% 0.061 193.1)
-
Step 500
500
#489996
oklch(63.2% 0.079 192.1)
-
Step 600
600 (this color)
#258583
oklch(56.3% 0.086 192.9)
-
Step 700
700
#116F6D
oklch(49.2% 0.08 192.6)
-
Step 800
800
#145A59
oklch(42.6% 0.066 193.5)
-
Step 900
900
#1A4A49
oklch(37.6% 0.051 193.3)
-
Step 950
950
#112B2B
oklch(26.9% 0.032 195.4)
#258583 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) | #7C7E83 | 0.089 |
| Deuteranopia (no green cones) | #6E7484 | 0.084 |
| Tritanopia (no blue cones) | #008984 | 0.014 |
| Achromatopsia (no color) | #787878 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258583
#258583
oklch(56.3% 0.086 192.9)
- #A15F67
#A15F67
oklch(56.2% 0.086 12.4)
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 #258583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.019
- Teal #008080 ΔE 0.021
- Bluegreen #017A79 ΔE 0.039
- Teal Blue #01889F ΔE 0.042
- Deep Aqua #08787F ΔE 0.043
- Teal Green #0A9396 ΔE 0.043
- Ocean #017B92 ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.047
Use #258583 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.