#05585F
Closest named color: Deep Teal (#00555A). oklch(42.1% 0.07 204.4), rgb(5, 88, 95).
Aa
White text reads best on this color (8.17:1).
About this color
#05585F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.070 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.012 away. White text reads best on it, at 8.17:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #05585F |
| RGB | rgb(5, 88, 95) |
| HSL | hsl(185, 90%, 20%) |
| OKLCH | oklch(42.1% 0.07 204.4) |
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 #05585F | 8.17:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #05585F | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #05585F text on white | 8.17:1 | AAA | Lc 87.8 | Fine for body text |
| #05585F text on black | 2.56:1 | Fails | Lc -14.3 | Not readable |
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 800.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A3C9CD
oklch(81% 0.041 204.3)
-
Step 400
400
#6EADB4
oklch(70.8% 0.065 204.7)
-
Step 500
500
#4198A1
oklch(63.1% 0.084 204.6)
-
Step 600
600
#12828C
oklch(55.5% 0.091 204.7)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800 (this color)
#05585F
oklch(42.1% 0.07 204.4)
-
Step 900
900
#154A4F
oklch(37.7% 0.055 204.1)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#05585F 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) | #50545F | 0.070 |
| Deuteranopia (no green cones) | #444C5F | 0.062 |
| Tritanopia (no blue cones) | #005C5A | 0.018 |
| Achromatopsia (no color) | #4F4F4F | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05585F
#05585F
oklch(42.1% 0.07 204.4)
- #6F3D3A
#6F3D3A
oklch(42.1% 0.071 24.2)
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 #05585F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.012
- Petrol #005F6A ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Green #005249 ΔE 0.038
- Dark Teal #014D4E ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.045
- Dark Aqua #05696B ΔE 0.054
- Charcoal #264653 ΔE 0.056
Use #05585F 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.