#005F55
Closest named color: Dark Green Blue (#1F6357). oklch(43.6% 0.078 182.6), rgb(0, 95, 85).
Aa
White text reads best on this color (7.58:1).
About this color
#005F55 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.020 away. White text reads best on it, at 7.58:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #005F55 |
| RGB | rgb(0, 95, 85) |
| HSL | hsl(174, 100%, 19%) |
| OKLCH | oklch(43.6% 0.078 182.6) |
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 #005F55 | 7.58:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #005F55 | 2.76:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #005F55 text on white | 7.58:1 | AAA | Lc 85.8 | Fine for body text |
| #005F55 text on black | 2.76:1 | Fails | Lc -16.2 | Dividers and decoration only |
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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C8DFDA
oklch(88.5% 0.025 181.2)
-
Step 300
300
#A1CBC3
oklch(81% 0.046 182.2)
-
Step 400
400
#6AB0A4
oklch(70.7% 0.073 182)
-
Step 500
500
#3A9C8E
oklch(63.2% 0.093 182.2)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800 (this color)
#005F55
oklch(43.6% 0.078 182.6)
-
Step 900
900
#104C44
oklch(37.7% 0.061 182)
-
Step 950
950
#0C2D28
oklch(27.1% 0.039 181.6)
#005F55 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) | #5A5955 | 0.083 |
| Deuteranopia (no green cones) | #4F5156 | 0.078 |
| Tritanopia (no blue cones) | #00615C | 0.012 |
| Achromatopsia (no color) | #545454 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005F55
#005F55
oklch(43.6% 0.078 182.6)
- #743E4D
#743E4D
oklch(43.5% 0.077 3)
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 #005F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.020
- Petrol #005F6A ΔE 0.036
- Deep Teal #00555A ΔE 0.037
- Dark Aqua #05696B ΔE 0.042
- Dark Blue Green #005249 ΔE 0.043
- Spruce #0A5F38 ΔE 0.046
- Pine #2B5D34 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #005F55 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.