#2F554B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.047 175.1), rgb(47, 85, 75).
Aa
White text reads best on this color (8.32:1).
About this color
#2F554B is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.047 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.023 away. White text reads best on it, at 8.32:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #2F554B |
| RGB | rgb(47, 85, 75) |
| HSL | hsl(164, 29%, 26%) |
| OKLCH | oklch(41.8% 0.047 175.1) |
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 #2F554B | 8.32:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #2F554B | 2.52:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #2F554B text on white | 8.32:1 | AAA | Lc 88.7 | Fine for body text |
| #2F554B text on black | 2.52:1 | Fails | Lc -13.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE9
oklch(93.7% 0.008 168.7)
-
Step 200
200
#CFDDD8
oklch(88.6% 0.016 172.6)
-
Step 300
300
#AFC7BF
oklch(80.9% 0.028 173.5)
-
Step 400
400
#84AA9F
oklch(70.7% 0.044 175.4)
-
Step 500
500
#659587
oklch(63.1% 0.056 174.2)
-
Step 600
600
#4B7F71
oklch(55.6% 0.06 174.9)
-
Step 700
700
#3B6B5F
oklch(49% 0.056 175.9)
-
Step 800
800 (this color)
#2F554B
oklch(41.8% 0.047 175.1)
-
Step 900
900
#2C4840
oklch(37.7% 0.037 174.3)
-
Step 950
950
#1A2A26
oklch(26.9% 0.023 177.2)
#2F554B 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) | #53514B | 0.050 |
| Deuteranopia (no green cones) | #4C4C4C | 0.047 |
| Tritanopia (no blue cones) | #225652 | 0.015 |
| Achromatopsia (no color) | #4E4E4E | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F554B
#2F554B
oklch(41.8% 0.047 175.1)
- #61424E
#61424E
oklch(41.8% 0.046 354.4)
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 #2F554B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.023
- Dark Blue Green #005249 ΔE 0.034
- Deep Teal #00555A ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.043
- Dark Teal #014D4E ΔE 0.045
- Pine #2B5D34 ΔE 0.051
- Petrol #005F6A ΔE 0.052
- Spruce #0A5F38 ΔE 0.058
Use #2F554B 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.