#2F554F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.9% 0.045 182.9), rgb(47, 85, 79).
Aa
White text reads best on this color (8.29:1).
About this color
#2F554F is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.045 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.020 away. White text reads best on it, at 8.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #2F554F |
| RGB | rgb(47, 85, 79) |
| HSL | hsl(171, 29%, 26%) |
| OKLCH | oklch(41.9% 0.045 182.9) |
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 #2F554F | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #2F554F | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #2F554F text on white | 8.29:1 | AAA | Lc 88.5 | Fine for body text |
| #2F554F text on black | 2.53:1 | Fails | Lc -13.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C2
oklch(80.8% 0.026 184.1)
-
Step 400
400
#84AAA3
oklch(70.8% 0.043 182.5)
-
Step 500
500
#64948C
oklch(63% 0.053 183)
-
Step 600
600
#4A7F76
oklch(55.7% 0.059 182)
-
Step 700
700
#3B6B63
oklch(49.1% 0.054 182.1)
-
Step 800
800 (this color)
#2F554F
oklch(41.9% 0.045 182.9)
-
Step 900
900
#2C4843
oklch(37.8% 0.035 181.9)
-
Step 950
950
#1A2A27
oklch(27% 0.022 181.6)
#2F554F 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) | #52514F | 0.048 |
| Deuteranopia (no green cones) | #4B4C50 | 0.046 |
| Tritanopia (no blue cones) | #205653 | 0.014 |
| Achromatopsia (no color) | #4E4E4E | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F554F
#2F554F
oklch(41.9% 0.045 182.9)
- #62434A
#62434A
oklch(42% 0.044 4.3)
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 #2F554F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.020
- Deep Teal #00555A ΔE 0.032
- Dark Blue Green #005249 ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.043
- Dark Teal #014D4E ΔE 0.045
- Petrol #005F6A ΔE 0.048
- Charcoal #264653 ΔE 0.055
- Pine #2B5D34 ΔE 0.057
Use #2F554F 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.